Bluetooth version: Bluetooth V4.0 Transmission range: 10m Frequency range: 2.402GHz-2.480GHZ Wireless transmitter standard: Class 2 Frequency response: 20Hz-20KHz SNR: 85dB Battery: 3.7V / 60mAH Talking time: About 4 hours Listen music: About 3 hours Standby time: About 3-5 days Charge time: About 1 hour Color: Black, White，skin color Item size: 20 * 25mm / 0.8 * 1.0in (D*L) Item weight: 4g Package size: 12.2 * 8.2 * 3.8cm / 4.8 * 3.2 * 1.5in Package weight: 12g Package content: 1 * Mini Bluetooth Headset 1 * instruction manual

Latest Bluetooth V4.0, high fidelity sound quality. Enhanced noise reduction, good choice for listening music, watching movie, talking on the phone, etc. Support multi-point connection, can connect two Bluetooth devices at the same time. Allow you to power on/off, answer/hang up/reject/redial call, pause and play Voice prompt, voice incoming phone number. Earbud design, no need earhook also can be used. Compatible with Bluetooth enabled devices, such as for iPhone, iPad, HTC, Lenovo, Samsung, Tablet PC, etc. Build-in rechargeable li-battery, can be charged via USB cable. Real-time battery status can be showed on some smartphones. The World's Smallest Ultra Light Design Stereo Bluetooth Headset, 4g/0.1oz Only, Easy to Carry.