CLOUD FOX Active Noise Cancelling Headphones, ANC Wireless & Wired Bluetooth 4.0 Headset, Foldable Over-Ear Headphones with Comfortable Earpads, HiFi Stereo Headset with Mic, 8 Hours Playtime

Noisy or quiet, it is up to you. CLOUD FOX H7 Active Noise Cancelling Bluetooth Headphones Long Battery Life: A built-in 300mAh battery won't allow your headphones power off, you can enjoy music world up to 16 hours, turning on the ANC switch can enjoy up to 8 hours noise-free world. ANC ON/OFF Switch: Turning on the ANC switch can reduce some of the low frequency noise, but for safety and communication with others, this Bluetooth headphones will not completely eliminate the human voice. Inline Control Buttons: The wireless Bluetooth headphones built-in microphone and the inline buttons, you can leave your phone where it is and take calls or play music with the touch of the button. Technical Parameters: Bluetooth version: V4.0 Bluetooth chip: CSR8635 Support agreement: A2DP, AVRCP, HFP, HSP Receiving distance: 10 meter/33 feet Battery: 3.7V / 300mAh Charging time: about 3 hours Music playing time: about 16 hours (50%volume, noise cancelling off ) ANC working time: up to 8 hours Driver Unit: 40mm Frequency Range: 20Hz - 20KHz Noise reduction performance: up to 22dB Impedance?ANC_OFF: 80? ANC_ON: 110? What's In The Box: 1 x CLOUD FOX Active Noise Cancelling Headphones 1 x USB Cable 1 x Audio Cable 1x Carrying Case 1 x User Manual