Product parameters<br /><br />Product size: 25MM diameter. Width 15MM. High 35mm<br />Product Net Weight: approx. 5g<br />Full Weight: 60g<br />A cell phone cannot connect 2 headsets at the same time via Bluetooth｣ｬ but one headset can connect 2 cellphone <br />Product color: Black｣ｬ white｣ｬ gold｣ｬ rose gold｣ｬ red<br />Standard: Earphone + charging line + manual + packing box<br /><br /><br />1. Drive: 15mm<br />2. Impedance: 32OHM<br />3. Bluetooth version: Bluetooth v4.1pedr<br />4. Bluetooth Use frequency band: 2.4GHz<br />5. Power level: Class II<br />6. Output power: 30mW<br />7. Bluetooth Distance: 10 meters<br />8. Frequency response: 20-2000 Hz<br />9. Operating voltage range: 3.0v-4.2V<br />$number  Microphone Head Sensitivity: Je-42Db<br />11. With A2DP AVRCP high quality stereo audio transmission and Remote control protocol<br />12. Powerful noise elimination circuit (active reducing noise)<br />13. Switching between English and Chinese (not connected with Bluetooth status｣ｬ press switch 2 times｣ｬ to hear the prompt sound switch success)<br />14. Charging time of about 1 hours (Power indicator charge: red light｣ｬ full power: red light off (blue light).  <br />17. Call TIME about 4-5 hours<br />18 Music Time about 4-5 hours<br />19. Standby time is about 120 hours<br />20. Charging time is about 60 minutes<br />21. Battery Capacity 60MAH<br />22. Charging power: Dc5v Power "round Hole Interface" (Computer USB port｣ｬ mobile charger｣ｬ car charge)<b