Practical Voice Recording Box: Our sound recording box operates using 3 batteries (not included), providing extended usage time. Depending on the length of the audio file, the battery can last for years. Our sound box has ample memory and can store numerous MP3 files for loop playback; you can store voice messages or music you like; when the battery is replaced, your audio remains safe and ready to play without re-importing. Easy to Use: First, connect the audio player to your computer using the USB cable. Once connected, it will appear as a USB drive in your computer's interface. Simply click on it, insert the desired audio, and unplug the USB cable when the transfer is complete. To play the audio, turn on the power switch, adjust the volume, and press the button to start playback. If you need to change the audio, press the button again. Fine Gift Choice: Imagine the surprise someone would feel if your gift is audible! The sound box can be used as a filler for plush toys, gift boxes, etc. It will be surprising to hear a sound when your family, friend, or partner receives the gift; these gifts can create unforgettable memories for friends and relatives. Wide Application: This voice recording box can be used on many occasions and in various ways, such as creating sound frames, musical gifts, plush toy voice buttons, custom sound buttons, etc. You can transform your favorite music, or send gifts that play greeting music, such as for Christmas, New Year, birthdays, etc., to give the gift a special meaning. The audio player has 16M memory, capable of storing 960 seconds of MP3 audio files and 2400 seconds of WMA files. It measures 5.8 x 4.7 x 2.5 cm / 2.28 x 1.85 x 0.98 inches. The USB cable is approximately 22.3 cm / 8.78 inches long. There is a volume adjustment knob that allows you to control the volume; it is small and easy to carry. Due to different product batches, the appearance may vary, which does not affect its use. Color: White Material: Plastic Package Contents: 1 x Sound Box 1 x Data Cable Only the above package content is included; other products are not. Note: Light reflections and different displays may cause the color of the item in the picture to differ slightly from the real object. The allowable measurement error is +/- 1-3 cm.