AGPTEK U3 USB Stick Mp3 Player, 8GB Music Player Supports Replaceable AAA Battery, Recording, FM Radio, Expandable Up to 128GB, Black
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Capacity: 8GB
Color: Black
Features
- REPLACEABLE BATTERY: Never worried about power, replace at any time with 1 AAA Battery(Not included). The battery capacity of different brands may influence the battery life of the player. NOTE: The replaceable battery should be out of the device to transfer files. The battery icon will show empty after about 10H but still can work for a few hours.
- USB DESIGN: No Cable needed, you can directly connect with PC to transfer files.USB 2.0 providing high speed transfer,Could be used as a flash drive. It has no lock screen function due to the special USB design. NOTE: Don't support charging via USB and only replace batteries.
- SIMPLE OPREATION: Support Music format MP3/WAV, Playing modes: normal, shuffle (random), repeat. Support 6 equalizers.
- LARGE MEMORY: 8 GB Memory capacity Stores up to 2000 songs; Supports up to 128GB Storage card (not included). There is no limit to the number of songs from folder option.
- ADDITIONAL FUNCTION: The player also functions as an FM radio and as a recorder. Meets your different requirements.
Brand: AGPTEK
Model Name: U3
Special Feature: FM Radio, Music Player, Voice Recorder
Connectivity Technology: USB
Memory Storage Capacity: 32 GB
Color: Black
Screen Size: 0.77
Compatible Devices: Personal Computer, Headphone
Media Type: USB
Included Components: MP3 Player, User Manual
Product Dimensions: 3.18 x 1.02 x 0.51 inches
Item Weight: 0.776 ounces
Department: All Ages
Manufacturer: AGPTEK
Item model number: MU3B
Is Discontinued By Manufacturer: No
Date First Available: December 14, 2016
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Similar Products
Top Amazon Reviews
Capacity: 8GB
Color: Black
Review for the AGPTEK U3. Under the batter cover though a small opening, you can see the computer chip that is used in this device, an Actions Semiconductor ATJ331X from 2010. I was able to find the datasheet online. Datasheet mentions is supports WMA and other digital audio standards. I tested a plethora of formats but only MP3, WMA, and WAV files play. It can play CBR and VBR made with the LAME encoder, haven't yet found an mp3 which cannot. Assumes WAV files are voice recordings, as it displays the voice record symbol on the screen, not that it effects the sound in anyway. You could upload music as WAV files if you really wanted to. The screen shows the bit rate of the file being played. CD rips to WAV display as WAV 999 on the screen. The bit rate is actually 1411 but the display can only show three digits. If you are playing a variable bit rate file, it will update and change the displayed bit rate several times a second. The slow LCD display has ghosting issues, so the bit rate can be somewhat hard to read for VBR files. Still, that's a neat feature. Has a variable speed playback setting. Allowing you to playback slower or faster than normal. The audio seems to be monaural or lower quality in some way when the speed is set to anything other than normal. The display shows a small frequency band amplitude visualization, and it seems to actually update following the music instead of just being a cycling animation. Another small but neat feature. Music fades out instead of shutting off instantly when changing songs. Songs are organized by folder, and by the order in which they were uploaded to the device, NOT alphanumerically or by metadata! For example, if track 05 is uploaded to this device first, then track 01, track 05 will play first and track 01 after. This causes issues if you copy whole folders to the device as the tracks might not be copied to the device by your file manager in proper order. So, you have to copy one track to the U3 at a time, from first to last, if you want tracks to playback in the same order as they are on the album. This device also doesn't support any playlists, only folders. All in all, it's an efficient and simple portable music player with built in FM radio, a replaceable AAA battery, SD card expansion storage, and good sound quality for low impedance headphones.
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Reviewed in the United States on October 5, 2023 by Shamoa Krasieski
Capacity: 8GB
Color: Black
I have bought three of these dang things over the past four years. Not because they keep breaking, no; because this is the only mp3 player still made with a frickin removable cell. This shouldn't be a hard thing, but apparently it is. If I want a rechargeable, I'll get a AAA that does that. Any kind of replaceable or repairable feature is a good one in my book. The screen is relatively terrible, but it's usable. The UI is basic, but functional and not complicated. Sound output is good and loud enough. Battery life is... it kind of doesn't matter, since again, you can swap and start playing again in seconds, but I have gotten about the stated ten hours out of a reusable triple, 13 out of an alkaline. Throw out the included headphones and get a better pair, I beg of you. Lord they're bad. They work, but they're only good for speech content. I have been thinking about getting a few more of these for setting aside as they're the last of their kind. In fact... yeah, you should order before I do.
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Reviewed in the United States on October 5, 2025 by Brian Stewart
Capacity: 8GB
Color: Black
I am one of those people (like many of you) in a desperate quest to find a good AAA battery mp3 player. In my opinion, the best ones ever made were all by Coby, but none of the Cobys are still manufactured. Starting in 2009, I’ve bought 8 Coby players over the years, and only one of them has ever stopped working. (I own so many in part because I like to have different audiobooks going at the same time, because I use a few of them for sleeping music, and because I wanted some extra in case I never get to buy a quality AAA battery mp3 player again.) In case anyone has no idea why AAA battery mp3 players are superior to all other choices, this is because: 1. eneloop nimh rechargeable batteries are incredibly cheap per usage and last longer than most of us will. (The amazon brand imitations of eneloops are great too.) 2. if you carry an extra AAA battery with you, then you basically have unlimited power because you can easily change batteries and never have to stop listening. Having an extra AAA battery for a AAA mp3 player makes the player feel like it is solar powered--I *never* have to stop listening. 3. nimh batteries DO NOT BLOW UP OR CATCH FIRE. All lithium batteries are capable of doing this, but nimh can’t. For me this is a deal breaker for all non-AAA players. 4. nimh batteries can sit in the car all day in the Texas Summer heat and be fine. I’ve got eneloops from 2009 that have spent 8 straight Summers baking in the car like potatoes, and I still can’t tell the old ones from the new ones. Lithium batteries are not as tough. 5. AAA batteries can be replaced, so an AAA player could last decades. Lately, I tried out three AAA battery mp3 players: 1) the AGPtEK U3 8GB mp3 player 2) the 8GB USB 2.0 Flash Drive LCD Mini MP3 Music Player w FM Radio Voice Recorder (the kind that you can find trivial variations of everywhere on Amazon, and that always has that keychain ring sticking out of a cylinder on the end) 3) and the Naxa MP3 Player with 4GB Built-in Flash Memory, LCD Display, PLL Digital FM Radio and Built-In USB Plug Adapter (that I bought at Frys). All three of these products count as the worst three products that I have purchased in the last 5 years, in any category. The Naxa player occasionally fails to read mp3 files from the early 2000s (that every other mp3 player ever made can easily play), is impossible to use without looking at it (bad for driving), and is very cheap in quality. It’s constant changing of backlight colors is the most stupid idea ever thought up by an engineer, and you can’t stop it from doing this. The one with the keychain ring arrived broken-in-advance (this is a famous specialty of the makers of that product--if it arrives working properly it means you have a fairy godmother or something). Mine does not rewind, ever, and that is seriously annoying. This product WAS the worst product that I ever bought in the last 5 years, until the AGPtEK. The AGPtEK seems well made, with higher build quality than most, but it has a design flaw that is absolutely maddening--it’s volume buttons and forward/back buttons are all attached on the same wheel, and are way to sensitive/imprecise for that setup. This means that you cannot change volume without risking suddenly skipping forward or back one track. No matter how carefully you try, even if you are doing nothing else and staring right at the player, it is very easy to accidentally skip tracks forward or back when you try to change the volume. Every single time you try to change the volume by one tick, you have about a 1 in 6 chance of changing tracks by mistake. (And that is only if you are staring at the player and concentrating. If you are driving you have at least a 1 in 3 chance of skipping tracks by mistake.) This problem will ruin your life, especially if you listen while driving and have to change volumes depending on how fast you are now going. I hope that AGPtEK will make another model with separate buttons for volume control. AGPtEK seems to make good products, and they may be the only company capable and willing to make a good AAA battery mp3 player. If so, I will happily buy it and add on to this review to tell everyone of the improvement. If anyone finds a good AAA battery mp3 player, please comment on this review to let me know. To help us all out in the quest to find a good AAA mp3 player, please like this review so that more people notice it. Good luck!
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Reviewed in the United States on May 14, 2017 by reviews.really.matter