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Sharp

Sharp Big Bang Super Loud Alarm Clock for Heavy Sleepers, 115dB, 6 Sounds

  • Based on 2,270 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Oct 20
Order within 14 hours and 18 minutes
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Color: Silver


Features

  • Extra Loud Alarm Clock - The Sharp Big Bang is the loudest alarm clock for kids of all ages. The up to 115db extremely loud alarm clock allows you to adjust the volume AND tone of the alarm sounds to create the perfect custom noise to wake you up!
  • 6 Extremely Loud Wake up Sounds Adjust the volume and tone of the six different unique sounds that will get you out of the bed and ready to start your day! Choose from Rooster, Bugle, Nagging Mom, Jackhammer, Siren, Loud Beep Up to 115db Alarm Volume
  • Dual Extra Loud Alarms with Custom Snooze Functionality: Allows you to set two separated alarms easily especially handy for couples or roommates who keep different schedules. When the alarm goes off, touch the snooze button on top of the clock to give you a few more minutes of sleep. Snooze can be customized to a time of your choosing from 1-59 minutes. If you dont adjust the custom snooze, the default snooze time is 9 minutes.
  • 3 Step Dimmer Control: 3-Level Adjustable Brightness -- The digital clock provides 3 levels of brightness (Off, Low, High) allowing you to select the most comfortable brightness for your room.
  • Electric Powered with No Worry Battery Backup: Plug into standard household wall outlet (This alarm clock is compatible with 110V/120V power outlets) to power the Sharp Big Bang Extremely Loud Alarm Clock. Battery Backup (Requires 2 x AAA batteries (not included)) This clock is electric operated; The battery backup is used for storing the time and alarm settings if the power is interrupted. During battery backup the clocks display will not be lit. Once the power is restored the display will re-light.

Description

Built specifically for people who sleep through phone alarms and standard clocks. The Sharp Big Bang delivers powerful wake performance for adults, teens, students, and shift workers who need dependable morning wake-ups. Extra-loud alarm reaches up to 115dB — wake up on time for work, school, travel, or early schedules Louder than Phone Alarms Built for heavy sleepers—Sharp Big Bang delivers powerful, dependable wake-ups every morning. 6 powerful alarms—Rooster, Bugle, Siren, Jackhammer, Beep & Nagging Voice to wake heavy sleepers. Sharp Super Loud Clock Sharp Vibrate/Loud Clock Sharp SPC100A Alarm Clock Sharp Clock w/USB Charge Sharp Battery Alarm Clock Is this alarm clock loud enough for heavy sleepers? Yes. The Sharp Big Bang reaches up to 115dB and is designed specifically for deep sleepers and people who sleep through phone alarms or standard bedside clocks. Will this wake someone who sleeps through phone alarms? The Big Bang alarm is significantly louder than most smartphone alarms and uses powerful wake sounds designed to break through deep sleep cycles. Is this alarm clock good for shift workers or changing schedules? Yes. Dual alarms allow separate wake times for rotating shifts, early mornings, or backup alarms, making it ideal for shift workers and busy schedules. What happens if the power goes out overnight? Battery backup keeps your alarm settings saved during power interruptions so your wake-up schedule remains protected. Who is this alarm clock best for? The Sharp Big Bang is ideal for heavy sleepers, teens, students, adults, and anyone needing a dependable alarm clock for work, school, or daily wake-up routines.

Brand: Sharp


Color: Silver


Display Type: Digital


Style: Contemporary


Special Feature: Adjustable Volume


Product Dimensions: 3.55"W x 5.91"H


Power Source: Battery Powered


Room Type: Bedroom


Shape: Rectangular


Indoor/Outdoor Usage: Indoor


Display Type: Digital


Additional Features: Adjustable Volume


Power Source: Battery Powered


Indoor Outdoor Usage: Indoor


Mounting Type: Wall Mount


Number of Batteries: 2 AAA batteries required.


Alarm Clock: Yes


Operation Mode: Electrical


Watch Movement: Quartz


Item Dimensions W x H: 3.55"W x 5.91"H


Item Weight: 12.48 ounces


Size: Large


Material Type: Silver


Frame Material: Acrylonitrile Butadiene Styrene


Color: Silver


Style Name: Contemporary


Room Type: Bedroom


Shape: Rectangular


Theme: Alarm Clock


Dial Color: White


Clock Form: Time Clock


Brand Name: Sharp


Number of Items: 1


Number of Packs: 1


Unit Count: 1 Count


Item Highlight: Adjustable tone, custom snooze, 2 wake times, battery backup, hard of hearing, deep sleep, shift workers, dorm room, students


Manufacturer: Sharp


UPC: 049353008608


Manufacturer Part Number: SPC657CDAMZ


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Finally, an Alarm That Actually Wakes Me Up!
Color: Silver
This alarm clock is AMAZING! If you’re a heavy sleeper, this is definitely worth trying. The alarm is incredibly loud and actually gets my attention in the morning. I also love that there are several different sounds to choose from, so I can change it up depending on my preference. The adjustable tone and volume are great features, and the clock is easy to set up and use. I’ve tried plenty of alarms before, but this one really stands out. It gives me peace of mind knowing I’m much less likely to sleep through an important morning. Highly recommend this for anyone who struggles to wake up, especially heavy sleepers. It definitely does what it’s supposed to do! ... show more
Reviewed in the United States on September 23, 2026 by Hunter80
    • Nice alarm clock
Color: Silver
A nice alarm clock, easy to set , alarm is very loud and adjustable as well as the brightness. Battery backup is nice but I think the alarm doesn’t work if the power is off. Seems to be very accurate time wise.
Reviewed in the United States on October 9, 2026 by John F
    • Its EXACTLY what is described... I sleep like a rock - this is the only thing that will wake me up!!
Color: Red
This Sharp Big Band Super Loud Alarm Clock - is the real deal. It isn't a normal loud, it is EXTREMELY LOUD! Which is exactly what I wanted and needed! It has different wake up sounds and has I think 1-15 different loud settings, 15 being the loudest. If your anything like myself (I would call myself a very, very, HARD sleeper, anything above "10" will work for me) but I still have it all the way up just so I know ill wake up regardless! It's a blessing and a curse to be able to sleep like I do, but the curse is that normal alarm clocks just don't do it! I even looked into those alarm clocks with a shaker for your pillow.. I can tell you with how loud this is, you don't need anything else but this alarm clock! To give you a little example of how deep of a sleeper I am, when my fiancé and myself were in the hospital after our third child, the fire alarm for the brand new hospital we were in, went off and everyone on our floor ran out of their room thinking if was for real, and this was around 3AM in the winter, there was snow on the ground outside - I was still sleeping on the bed completely unfazed from this gigantic alarm going off through the hospital. Yes I was a bit sleep deprived as well but still, even if I wasn't, I would not have woken up.. So after saying that type of story, and for me to say this works for me should tell you how loud this alarm clock is!! I will say if your sharing a house with roommates, small kids, or a family - you may want to let them hear it so they at least don't awaken frightfully when it goes off lol regardless where this alarm is located in your house, it WILL wake up people throughout the house if you have to have it on the loudest setting. My fiancé can literally wake up to her phone vibrating in the morning. She is a very light sleeper so if she was around in the morning to hear this alarm clock go off it would probably blow her eardrums out (lol being a little dramatic but it is extremely loud when your right next to it) but really this is so loud it will wake some up everyone in the house. In all seriousness this alarm clock does its job for HEAVY SLEEPERS and is a fantastic!! I have loved it since the first morning Ive used it. It has not let me down yet and I HIGHLY recommend this alarm clock to the people that sleep similarly to myself. 5 out of 5 stars for this product! Love it!! ... show more
Reviewed in the United States on November 24, 2024 by Sean G.
    • THIS IS A GREAT CLOCK - UNTIL IT FALLS ON THE FLOOR. AVOID THIS CLOCK!
Color: Red
I really like this clock. It has controls that are intuitive, the display is very good, and most of all, the alarm is very loud! You can also select from several humorous alarm themes. In fact, I've bought three of these. But not for the reason you think. These clocks have a "wall wart" power supply. If your clock falls off your nightstand and hits the part where the cord plugs into the clock, it will destroy your clock. Now, if you're one of those people who NEVER have knocked an alarm clock off your night stand, there's nothing to worry about. BUT if you're like the other 98% of us, this WILL happen to you. The circuit board where the power plug from the wall wart plugs into the back of the clock is apparently very flimsy. Drop the clock onto the floor and the power plug will get pushed in and the circuit board will break, leaving you with a $27 paper weight. It happened to me TWICE. It WILL happen to you. If you don't mind replacing the clock every 60 days, this should not be a real problem. ... show more
Reviewed in the United States on July 5, 2026 by Bev Temmer
    • its good
Color: Silver
the alarm gets louder in steps good idea. a little bigger would have been nice.
Reviewed in the United States on September 23, 2026 by matthew
    • Easy to set/adjust. VERY LOUD. small font.
Color: Red
Very loud. Easy to set or adjust tome and/or alarm times. Several different alarm sounds available with large range of volume including a VERY loud setting. I love this thing. I set mine to the "rooster crowing" alarm sound and set it to the lowest pitch version - at max volume. I think it would be near impossible to sleep through. And I have definitely slept through alarms before. Not this one so far though. I'm deaf in one ear and even if I turn over so my "good ear" is down against the pillow, this is loud enough that I'm confident there is no way I'm not going to wake up. ONE downside - The size of the display is a little small. Big enough when adjusting it - but not really big enough for easy visibility without squinting when looking at it from across the room while in bed. ... show more
Reviewed in the United States on May 21, 2025 by Matthew Becker
    • 10/10, It’s Evil and I Hate It
Color: Red
Due to a series of dark and chaotic events in my life, I find recently that I am impossible to wake up. Not difficult, not kind of a pain, but fully impossible. The siren song comfort of sleep was interfering with my work and life. That is, until now. Now, with the help of whatever this demonic gift from my fiancée is called, I wake up on time every. single. merciless. morning. in a blind, rage-filled panic on a quest to find and violently extinguish the source of the insanely loud and obnoxiously perky bugling coming from this little clock. Why does it sound so cocky? It’s infuriating. It sounds smug. Like it is mocking me. It is very sturdy and hefty for its size, *somebody* keeps throwing it against walls and down the stairs and it still works like new. Unfortunately. The time hasn’t started moving backwards or anything so that’s good I guess. My cats hate it and so do I. 10/10 does what it’s supposed to do. ... show more
Reviewed in the United States on November 16, 2024 by B. Malicious
    • Super Loud Alarm Clock
Color: Silver
I already wore hearing aids in both ears and recently lost most of my hearing in my right ear. If I had to get up at a certain time I would have to call a friend and have them call me that morning because I could no longer hear my alarm. This clock is WONDERFUL!! I love being able to pick what sound I want to wake me up, the tone I need for that sound and how loud I need it to be. I also love being able to set it for 2 different alarm times. It was super easy to follow the instructions on how to learn to set everything. My biggest advice would be to take your time when you get it and have fun playing with the sounds ,volume and tones and chose what works the best for you. Now I can have it all set and ready in just seconds for the next morning. THANK you for giving me my independence back. ... show more
Reviewed in the United States on September 13, 2026 by S. Ruark

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