Features:

This Bluetooth 4.0 headphones with 40mm speaker, and Noise reduction technology, Talk clearly, Best audio performance!New Wireless Bluetooth 4.0 stereo Headphone for listen music and also can answer phone and talk with this Headphone.Work well with Apple Mac/IPAD/IPOD; Samsung Galaxy Tab; ALL Android Tablet and all other Tablet which have Bluetooth function.Bluetooth 4.0 Working distance is up to 33 feet awayBuilt in Li-battery, Can Recharagable; Playing time up to 8 hours; and continue talk time up to 6-7 hours. standby time up to 150 hours.

Specifications:

Speaker: 40mmImpedance: 32 OHMAudio Input: 3.5mmCharging port: USBBluetooth Version: V4.1SNR/SIGNAL NOISE RATIO: -96dbAudio frequency response: 20-20000HzBluetooth frequency range: 2.4-2.480GHz