The Art & Science of Risk Using the latest Bluetooth 5.3 technology, the product has low latency, stable connection, and reduced intermittent situations Supports the latest Environmental Noise Cancellation (ENC) technology to improve call quality and clarity of voice messages Support 4 peak microphone design, with ENC technology, can greatly reduce background noise Clear sound quality, heavy bass Compatible with Android / iOS devices After pairing for the first time, one lift automatically connects the device Equipped with a small charging box, the earphones can be charged immediately The headset can be used for up to 5 hours when fully charged With the charging box, it provides up to 15 hours of battery life In-ear design, suitable for various ear types Speaker frequency range: 20Hz - 20KHz Maximum output power: 5mW Speaker impedance: 32Ω±10% Speaker sensitivity: 109±3dB Support Bluetooth profiles: A2DP, AVCTP, AVDTP, AVRCP, HFP, SPP, SMP, ATT, GAP, GATT, RFCOMM, SDP, I2CAP. Audio playback time: about 5-6 hours Talk time: about 5-6 hours Storage temperature: -10°C - 55°C Working temperature: 0°C - 40°C