Features:1. Integrated BT 5.0 chip, offers fast speed, stable connection, allows transmission of 10-15 m without obstacle.2. Compatible with mainstream devices with BT function, suitable for multi-platform, multi-system, and major brand mobile phones.3. Effectively block external noise, and real-time audio calibration can maintain a high-quality listening experience.4. Ergonomically designed to fit each ear perfectly. Perfect for exercise, running, sports and games.5. Button control, which is more convenient and accurate. You can easily switch songs, answer/reject phone call, volume up/down.Notice:Actual color may be slightly different from the image due to different monitor and light effect.Please allow 1-3cm deviation due to manual measurement.Description:Cable length: 24CMVocal Principles: Dynamic CoilChip: JerryCodec: SBCBluetooth version: 5.0Supported protocols: HSP/HFP/A2DP/AVRCPBattery capacity: 130mAhCharging voltage and current: DV5V, 80MATransmission radius distance: 10MMusic time: about 18 hoursTalk time: about 10 hoursStandby time: about 120 hoursCharging time: about 2 hoursSensitivity: 110 dBImpedance: 16Speaker size: 14 mmFrequency Response Range: 50-20K hzWeight: 61g