1. Specifications: 2. Bluetooth V2.1 technology. 3. Need not setup any software and very easy to use. 4. Support profile: A2DP & ARVCP. 5. Support paired bluetooth-compatible stereo headsets/earphones to control play/pause, forward/backward. 6. Support automatism paired (no button). 7. Support paired pin code: 1234, 0000, 8888. 8. Range of frequency: 2.42 to 2.480 GHz(SIM) spectrum. 9. Support automatism standby mode: standby mode is started to save power when the stereo bluetooth-compatible headsets/earphones is not found in due time. 10. Support for iPhone, for iPod mini, for iPod nano, for iPod video, etc. 11. Compatible with 30-pin dock. 12. Type: bluetooth-compatible Transmitter 13. Material: ABS 14. Range of Frequency: 2.42 to 2.480GHz( SIM) Spectrum 15. Working Current: 40mA(Max) 16. Distance: 10 Meters 17. Size: 9cm x 6cm x 1cm/3.54inch; x 2.36inch; x 0.39inch; (Approx.) 18. Notes: 19. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. 20. Please allow slight dimension difference due to different manual measurement. 21. Package Includes: 22. 1 x bluetooth-compatible Transmitter