Features:

True Wireless Stereo (TWS) in-ear headphones with Active Noise Cancellation (ANC)
Multi-functional touch screen at the charging box
Bluetooth V5.3
Built-in microphone for phone calls
Charging case for up to 4 charges
Automatic on/off function

Technical specifications:
Bluetooth version V5.3
Bluetooth Transmitting distance ~10m (open space)
Frequency band 2.4GHz
Radiated transmission power max. 2.5mW
Loudspeaker / frequency / impedance / sound pressure level 2x 3mW / 20Hz-20kHz / 16Ω / 98dB
Audio codec A2DP/HFP/HSP/AVRCP/CVC
Playtime ~4h (middle volume)
Charges with charging box 4 times fully charged
Standby time ~300h inside charging box
Charging time earphones ~1.5h
Battery earphones (each) Built-in rechargeable 30mAh lithium polymer battery 3.7V / charging via charging case
Charging time box ~2h (5V/1A)
Battery charging box 300mAh lithium polymer battery 3.7V / charging via USB type C
Display charging box 320 x 172 pixel
Operating temperature -10°C up to +50°C