Chipset: Bluestrum AB5656C
Driver Size: Φ13mm ，32Ω/16MW
Frequency Range: 20Hz-20KHZ
Transmission Distance: ≥10m
Bluetooth Version: 5.4V
Speaker sensitivity: 105+/±3dB (1Khz)
Supporting protocols: A2DP/AVDTP/AVRCP/RFCOMM/HFP/HSP/SPP/HID
Decoding method: SBC, AAC
Battery Capacity: 40mAh for earbuds, 250mAh for charging case 
Playing Music Time : up to 6 hrs
Charging Time: around 1.5 hours for earbuds, 1.5 hours for charging case 
Charging port:  USB-C
Charging case size: 80x65x21.5mm