SMBT-40126 (OLTE CALL CENTER)

Driver unit: 40 mm

Frequency response: 20-20000 Hz 

Max input power: 20 mW

Bluetooth ver.: V5.1

Chip: BK32881

Connection: BT / 3.5 mm stereo

Battery life: around 18 h

Microphone polar pattern: omnidirectional

Control method: buttons control  

Charging connector: USB-C