Specifications:Small, lightweight and durable. High performance Bluetooth 4.0 (High-Fidelity) with A2DP for enhanced audio quality, allows you to enjoythe stereo music without wire restriction or watch TV quietly (not for answering calls).Work with any type and brand of device such as for TV, PC, CD player, iPod, Kindle Fire, MP3/MP4, etc. Up to 30 feet working range. Easypairing with Bluetooth stereo headset, headphones, speakers and other Bluetooth stereo audio enabled system.This one wireless transmitter with excellent battery life, to 5 hours of play time. With dual mode, you can use it plugged with AC adapterwithout worrying about the battery.Standard 3.5mm audio socket and cable enable this Bluetooth transmitter to connect to for audio devices.Delicately disc design, exquisite workmanship and mini size with light weight.Multi-function technique, one Bluetooth receiver can connect with two Bluetooth devices.High quality stereo transmission for a better music experience.Reverse control of the music play of connected Bluetooth devices.Safe driving design, it can be used as a Bluetooth carkit which with music play function. How to Use:1. Use AUX cable connect transmitter and TV or DVD or others device, then open the transmitter (press the button about 3-4 seconds).2. Open the Bluetooth headset, must under ready to pairing.3. The transmitter will auto connect your Bluetooth headset or Bluetooth speaker, then the TV or DVD sound will into your Bluetooth headsetor Bluetooth speaker, done ! Type: TransmitterColor: BlackBluetooth Version: 4.0Transmission Distance: ≤10mContinuously Working Time: 5 hCharge Time: 1.5 hCompatible Models: for TV, PC, CD player, iPod, Kindle Fire, MP3/MP4, etcSize: 45mm x 11mm/1.77" x 0.43" (Approx.) Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.