【Bluetooth】Support Bluetooth version over 2.0 and below 4.0. High-speed and stable transmission and high anti-interference ability enables easy use both indoor and outdoor and assures pleasant wireless music playing experience. You can support apple\'s latest wireless dual-bluetooth headset. You can play the music through Bluetooth speaker or Bluetooth headset. With Audio Line, Mp3 player can be connected with cars. 【HIFI Lossless Sound Quality】 It adopts professional intelligent digital noise reduction chip to reduce noise, ensuring high sound sampling rate and providing Hi-fi class sound that is close to the original. Excellent sound quality, support audio formats: Mp3/ WMA/ APE/ FLAC/ WAV/ AAC-LC/ ACELP. 【16GB Capacity and Bluetooth adapter】 16 GB capacity allows you enjoying music up to 5000, supporting up to 128 GB Micro TF Card. Designed with music play, It also support FM Radio, voice recording, File browser and E-book reading (support txt format only). With our bluetooth adapter, MP3 can be connected with your car or no-bluetooth divece, such as home theater, amplifiers, TV. Help you solve the bluetooth connection problem. 【Longer Battery Life & Faster Charge】 Up to 60 hours of playback with 3 hours of full charge. You can enjoy your wonderful musical journey with HD Quality Headphone. You can charge it with computer or the general charger which output is \"5V, 0.5-1A\". 【Multi- functional】 Scientific step count with the pedometer inside the system as well as with the lossless music keep you company when running and take the calories burnt in record; with the adjustable armband coming along, enjoy your sports in any way you like. Packaged in a gift box, this trendy and durable product is the best choice for a Christmas gift.