BLUETOOTH VERSION: 5.4DRIVER DIAMETER: 10 mmFREQUENCY RESPONSE: 20 Hz – 20 kHzIMPEDANCE: 32 OSENSITIVITY: 105 dB ±3dBTOTAL PLAYBACK TIME: around 12 hours PLAYBACK TIME: around 4-5 hoursSTANDBY TIME: around 80 hoursCHARGE TIME: Earbuds 1 hours, Charging case 1.5 hoursCHARGE PORT (Charging case): USB-C (5V DC)BATTERY: Earbuds 30 mAh Li-ion, Charging case 230 mAh Li-ionDIMENSIONS: 58x46x26 mmWEIGHT: 29 g