HAVIT-TW917 series-TWS earbuds Black

Chip:JL6936D
Bluetooth V5.0
Earbuds battery: 40mAhx2
Cabinet battery: 3.7V 400mAh
Speaker: ?12mm/5mW
Music/Talking time: around 3.5 hrs
Activate Voice Assistance(Siri,etc.)
Type-C port
Touch Button
Earbud dimensions: 19*39*22mm
Net weight:4g*2(Earbuds)/39g(Charging case)
Wireless working range: 10M (without obstacles )
Speaker: ?12mm*2
Speaker sensitivity: 90±3dB 1kHz/1mW
Profiles supported: HFP,HSP,A2DP, AVRCP,TWS
Impedance: 16?±15% 1kHz
Mic sensitivity: -42 ±3dB
Speaker frequency: 100Hz?10KHz
Input voltage / current: DC 5V/1A