Description: This is a Bluetooth transmitter. Connect it to the 3.5mm audio port of your HiFi speaker, for iPod, for PSP, MP3 player, TV, computer and so on. And then it will transmit the sound to your Bluetooth-enabled earphone or speaker. No longer disturb your family when you watch the match or play video games at night. The old that has poor hearing no longer need to turn up the TV at a volume that is too loud to others. Practical and useful, with compact pocket, really a necessary kit for home speaker system. Features: Transmit the sound from TV, CD player, MP3 and other audio device to Bluetooth speaker / earphone. Low latency technology. Support on-line games, TV, movies sound real-time transmission. The stereo transmitter transmits lossless HiFi sound to your earphone or speaker. Watch the match or play video games at deep night without disturbing your family. Built-in 250mA battery, support 5-8 hours of long working time on a full charge (take about 2-3h). Compact and lightweight, simple design, easy to use and carry around. Specifications: Color: White Material: Plastic Bluetooth Protocol: A2DP HSP HFP OPP OBEX DUN Frequency Response: 2.4GHZ-2.4835GHZ Battery Capacity: 250mA Charging Current: 150mA Charging Time: 2-3 Hours Standby Time: About 720 Hours Working Voltage: 3.3-4.2V Working Current: 3.7V/30mA Working Time: 5-8 Hours Size: Approx. 45 * 32 * 8 mm / 1.8 * 1.3 * 0.3 in Package Weight: About 38g Package List: 1 * Bluetooth Transmitter 1 * 65cm USB Charging Cable 1 * User Manual (Other items in the pictures are not included.) Note: Your Bluetooth speaker / earphone should support A2DP. This is a transmitter, not a receiver. 1、Transmit the sound from TV, CD player, MP3 and other audio device to Bluetooth speaker / earphone. 2、The stereo transmitter transmits lossless HiFi sound to your earphone or speaker. 3、Watch the match or play video games at deep night without disturbing your family. 4、Built-in 250mA battery, support 5-8 hours of long working time on a full charge (take about 2-3h). 5、Compact and lightweight, simple design, easy to use and carry around.