Style:Active Noise Cancelling Bluetooth Headphone. Bluetooth Version: V5.1 Chipset: BES2300 Color: Black/Grey ANC effect : 25dB Features:Bluetooth,Microphone,Built-in mic,Volume control,Foldable,Bluetooth signal stable in Metro.etc. Transmission distance:≧10 meters. Audio impedance: 32ohm Power supply:Rechargeable Lithium-Polymer battery(400 mAh). Stand-by time: More than 300hrs. Talk time/Play music:Up to 32 hours. Power input: DC5V/200mA. Charging time: 2 hours. Frequency range :2400.0-2483.5MHz. Compatible with iphone/Huawei/Xiaomi/All Smartphones/Laptop/Computer/All Bluetooth Devices,etc. Advanced ANC design effectively reduces noise up to 90%
