product Description (1) Play MMC / SD card to store the MP3 / WMA files(Bluetooth).  (2) connected to the computer reading and writing files to the MMC / SD / TF (to be equipped with card sets) card for the card reader function.  (3) 3.5mm audio output common port, headphone playing music output to other audio devices.  (4) A 3.5mm universal audio input port can be used as a headset for other audio playback devices.  (5) High-quality speakers and sound chamber designed to ensure high-fidelity, CD sound quality,  (6) 5B rechargeable batteries, convenient can easily replace the battery, and practical.   Parameters    (1) Support Computer System: Windows98, win2000, win XP, win Vista  (2) USB Interface: High-Speed USB 2.0;  (3) support memory cards: MMC Card, SD Card, (need to add an SD card adapter)  (4) The maximum supported card capacity: 16GB  (5) Support music file formats: MP3wma  (6) Support audio sample rate: 8-48KHZ (MP3 bit rates: 8-448kbs, WMA bit rates: 32-384kbs)  (7) Battery: 5B rechargeable battery (3.7V 400mah);  (8) Charging power supply: computer USB port DC5V; DC 5V (500MA) Travel Charger: DC 5V (500MA) Car Charger  (9) Continuous working time: about 8 hours;  (10) LCD status indicator;  (11) Frequency Response: 12Hz-25KHz;  (12) SNR: 70db;  (13) Output Power: 2X10mW.

Mini Invisible wireless earphone design;

Super Mini size and hidden in the ear, do not wear the bale;

Unique headset design, stable in the ear, good for driving, sports, business, or leisure;

 Wireless Bluetooth meter range (no obstacles);

Deep DPS-noise reduction microphone ensures clear call quality;

Voice prompt for pairing, calling, turn on/off;

One button function for on/off, song switch, language change, and receive calls;