Highlights: 1. Driver: 15mm 2. Impedance: 32 OHM 3. Bluetooth version: Bluetooth v4.1 + EDR 4. Output power: 30mW;Battery capacity 60MAH 5. Bluetooth distance: 10 meters 6. Frequency response: 20-20000Hz 7. Operating voltage range: 3.0V-4.2V 8. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol 9. Powerful noise de-noising circuit (active noise reduction) 10. switch between Chinese and English (boot does not connect Bluetooth state, press the switch 2 times) 11. Charging time about 1 hour . 12. Talk time is about 4-5 hours with charger box can charge it about 2-3 times) 13: Talk time is about 1.2 hours (USE ALONE) : 14. Music time about 2-3 hours with charger box can charge it about 2-3 times 15. music time about 1.2 hours USE ALONE 16. Standby time is about 100 hours Product Description: 1. listening to music, support music and phone call, 2. Caller ID, the last call back, English voice prompts, boot, pair, shut down the phone power will be low voice prompts; 3.Phone power display, you can always watch the headset power situation, do not worry about the headset no electricity to make your life worry; 4. Bluetooth headset every time connected to the phone after the shutdown, and then open the Bluetooth headset will automatically connect back to the phone, but also more convenient; 5. Intelligent compatibility: support all with Bluetooth mobile phone, tablet, notebook, singing it, QQ music, movies, etc., all the mobile phone. Weight: 0.2 What’s in the box: 2 x Earphones(left & Right) 1 x Cable 1 x Charging Box 1 x Manual SKU: 201108101411