I7s Binaural Wireless Bluetooth Headset TWS Earphone with Charging Bin Plating

Line Length:None With Microphone:Yes Wireless Type:bluetooth Connectors:None Waterproof:No Communication:Wireless Active Noise-Cancellation:Yes Support Memory Card:No Volume Control:Yes Control Button:No Is wireless:Yes Support APP:No Sensitivity:118dB Style:Ear Hook Vocalism Principle:Balanced Armature FeaturesBluetooth version: EDRV4.2Voice: SupportSupport Protocol: HFP HSP A2DP AVRCPFunction: answering calls, hanging up call registration, hanging up, listening to music pause/play, voice report, tail number redial, caller number, smart voice prompt, power display, noise reductionBattery capacity: left and right ears: 55mAh, base 300mAhCharging power supply: AC input 110-240V DC output 5VTransmission power: Class2Wireless frequency: 2.402-2.480GHzCall duration: 2-3 hours or soMusic playback: 2-3 hours or soCharging time: 60 minutesNoise Reduction: DSP Intelligent Noise Cancellation TechnologyOperating range: 15 meters effective distanceCharging interface