RUIZU D51 Stylish MP3 Player Review and Specs


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How do you like to enjoy your favorite songs? Despite smartphones has offered a new way to listen to music, the MP3 player never loses its position. This music playing tool is developed with advanced technology to meet your high standard of music enjoyment. And if you are looking for a full-featured and modern music player, the RUIZU D51 is a name to mention.

This player is packed with ease of use features and multiple functions, allowing you to enjoy not only music playback but also radio and voice recording. Designed with sports in mind, the D51 can be a great companion for your workouts such as jogging, running, or yoga.

Fashionable Music Player

The wireless MP3 player comes with a classic yet fashionable design to boost your confidence. The slim and compact body makes it comfortable on your grip, not to mention it is quite lightweight to carry. Weighing 80 grams only, this device is much more lightweight than your smartphone, but it’s heavier than RUIZU X02 with only 30 grams. Thanks to small dimensions that make it fit into armband, pocket, or bag.

RUIZU D51 Stylish MP3 Player Review and Specs

RUIZU D51 is equipped with a 1.8-inch color screen, delivering 128 x 160 screen resolution. The color LCD screen features a user-friendly interface that lets you control and setup the device with ease. Besides, you can monitor battery status, view the playing track, and even enjoy beautiful pictures of music background.

Unlike classic MP3 players, the D51 features a sensitive silent touch button. For night operation, simply turn on the backlight and you can easily see the control buttons in the dark. The device also houses volume buttons on the left side, allowing you to easily control the volume without accessing the screen. At the bottom, it features a USB port, audio jack, and memory card slot that supports up to 128GB.

More Than a Music Player

What you get

What you get

Advanced technology allows this small music player to wrap multiple functions. Aside from playing your favorite songs, this tool is designed for radio playing, e-book reading, voice recording and many more. I am about to mention a handful of highlight features brought by this MP3 player, so you would better check this out.

1. Music Play

Music Play

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Take your favorite songs on the move with the RUIZU D51. This music player is specifically designed to produce high quality sound, be it using Bluetooth or wired connection. For a better music listening experience, it features equalizer, shuffle mode and repeat mode. Whenever you have new songs, simply add to your favorite music playlist.

2. E-Book Reading

E-book reading is commonly found in smartphones but now you can enjoy this feature in a music player. RUIZU D51 comes with the ability to read your ebook, thanks to the support to txt file format. This is my favorite feature as I can finish my book collections without reading it. Additionally, your kids will be happy to listen to their favorite story books through this device.

3. FM Radio & Voice Recorder

This player features a built-in FM radio that lets you listen to favorite radio programs. To enjoy this function, make sure to plug in your wired earphone as an antenna. The D51 also serves as a voice recorder, allowing you to easily record audio, save in the memory, and play later.

4. Built-in Speaker

Built-in Speaker

I’m quite impressed how this small device comes with a built-in speaker. With this feature, you can enjoy music playback without connecting to Bluetooth speakers or wired headphones. Despite its small size, RUIZU D51 is able to produce loud audio so you can listen to favorite tracks with friends or family. This can be a great alternative in case the pressure of headphones or earphones hurt your ears.

5. Hi-Fi Lossless Sound

This MP3 player boasts excellent sound quality thanks to intelligent noise reduction chip that allows the device to produce lossless sound. With this feature, reduced noise results in clear sound that is close to the original. In addition to high quality sound, it supports a variety of audio formats including MP3, APE, WAV, WMA, OGG, and FLAC.

6. Pedometer


Pedometer is a feature to support your healthy lifestyle. The built-in pedometer function helps keep tracking your steps and running time. Simply insert the device into your armband, enjoy the music and do workouts as usual. Once finished, check the footsteps you have made and feel the goodness. This feature is supported in Bluetooth mode only.

7. Bluetooth


The wireless MP3 player features Bluetooth 4.1 version that promises stable transmission and high quality sound. It also boasts faster connection with compatible devices like headphones and speaker. With lower power consumption and longer distance, this small device delivers a bigger performance than you think.

Please note that the D51 is not a Bluetooth receiver. That means it can only pair with Bluetooth headphones or speakers, not with your phones.

Powerful Battery Support

Things just get better when I find that the RUIZU music player is powered by a large capacity Lithium ion polymer battery. It supports up to 30 hours of playback on wired connection and 7 hours on Bluetooth. The long lasting battery life enables you to listen to music on the go without worrying about its power.

Aside from a long life battery, it also features quite fast charging. The device will be fully charged within 2 to 3 hours and you will be ready to jam out with friends or family. Luckily, the USB charger is compatible with USB adapter, laptop, computer, or any charger with 0.5 -1A output.

RUIZU D51 Pros and Cons

  • Stylish Design with Classic Look
  • High Quality Sound
  • Long Life Battery
  • Ideal for Various Purposes
  • Slick Frame

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RUIZU D51 Pros

  • Stylish Design with Classic Look

This music player is not only versatile but also stylish. Adopting a classic look with screen and touch buttons, it looks premium and makes you confident when using it. As a bonus, the device is quite lightweight, easy to carry, and fits in nearly anywhere.

  • High Quality Sound

Upgrade your music listening experience with Hi-Fi sound quality. This player features an intelligent noise reduction chip that allows excellent sound quality close to the original. Be it with or without headphones, enjoy your favorite songs in exceptional audio quality.

  • Long Life Battery

Featuring a powerful Li-ion battery, this music player boasts long lasting battery life up to 30 hours.  Despite it is much shorter than its counterpart the X02 that reaches 80 hours, this model remains dependable for extended music playback.

  • Ideal for Various Purposes

The best thing I love about this MP3 player is multiple functions that make it ideal for all ages. It can be a great music player for adults and teenagers as well as e-book reading tool for kids. Not to mention it can serve as a voice recorder, FM radio and pedometer for a perfect sporting companion.

RUIZU D51 Cons

  • Slick Frame

Handling this device can be a little tricky. When your palm is sweaty or the frame is wet, it can easily slip from your hand. Besides, as it comes in small size, finding this device can be a bit challenging especially if you forget where you left it.

Final Words

The RUIZU D51 is a wireless portable MP3 player that is packed with a bunch of features to upgrade your music time. The collaboration of large memory capacity, powerful battery and multiple functions make this small device bigger than you think. If you are looking for a perfect gift for a kid, friend, or yourself, the D51 can be a nice pick.

RUIZU D51 Specifications

Product Size9.3 x 3.8 x 0.7cm(3.66*1.49*0.27inch)
Screen Size1.8 inch TFT Color screen
Audio FormatSupport MP3/ WMA/ APE / FLAC / WAV
Video FormatSupport AMV /AVI with resolution of 128*160
Voice RecorderSupport MP3 / WAV
Picture BrowseSupport formats of JPG & BMP
FM Receiving Frequency87.5 MHz~108 MHz
Charging Time2Hours
Charging PortUSB 2.0
Music PlaytimeAbout 30hrs(with wired headphones)
Music PlaytimeAbout 7hrs(with Bluetooth)
E-BookSupport TXT format
Item Weight80g
PedometerSupported in Bluetooth mode
Internal Capacity8GB
Headphone Output Power[email protected]Ʊ [email protected]Ʊ
TF CardMaximum support 64GB (Micro SD HC Card is not included)
CompatibilityXP (Home, Pro, with SP1, SP2, SP3), 32bit / Windows 7 --10 64bit
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