Description: Feature: Open wireless headphones surround the directional sound field, open design, sweatproof and waterproof, small body life Wear comfortably without ear clips, protect ears from damage Surrounding directional sound field The speaker adopts physical ecological diaphragm technology Light and wearable 180mah battery life, Bluetooth 5.1 chip, lower power consumption, stronger battery life, IPX5 life waterproof 5.1 Low power consumption is the core technology of the headset. It adopts an exquisite energy-gathering cabin design and a built-in large-capacity lithium battery to escort your headset. Specifications: Bluetooth version: V5.1+EDR Support protocol: A2DP1.3HFP1.6HSP1.2AVRCP1.6D11.3 Usage mode:Bluetoothcard mode(Maximum Support 32g) Transmission distance: 10-15m Battery capacity: 180mAh Charging voltagecurrent: 5V1A Playcall time: about 8-10h Charging time: about 2h Standby time: 180 days Speaker impedance: φ16mm 32Ω Microphone sensitivity: -42Db Working temperature: -10-50℃ Total weight: 70g Bare device weight: 26g Product list: Earphone*1, charging cable*1, manual*1