Bluetooth version: 5.1 Connection range: about 10 meters Charging case battery capacity: 180mAh Each earbud battery capacity: 30mAh Playback time: about 5 hours at 80% volume Standby time: up to 80 hours Case charging time: about 3 hours Control: Touch Control Frequency: 20Hz - 20KHz Sensitivity: 103dB ±3dB Impedance: 16 Ohms Weight: about 48 grams with case Price 50 non-negotiable WhatsApp number ( Phone number appears when clicking the contact button )