ST9 28 CAT Headset

Specifications:
BT version: 5.0
Support Profiles: HSP, HFP, A2DP, AVRCP
Transmission Distance: up to 10m (no obstacle)
Drive Unit: φ40mm
Frequency Response: 20-20KHz
Resistance: 32ohm
Sensitivity: 105dB
Microphone: Built-in
Plug Type: 3.5mm Audio Port
Battery Capacity: 400mAh
Music Playing Time: about 7 hours (depends on the volume)
Charging Time: about 2.5 hour
Charging Voltage: DC 5V
Color: Black, Pink, Blue, Purple, Green (Optional)
Main Item Size: Approx. 20.0*17.5*7.0cm/7.87*6.88*2.75in
Item Weight: 254g/8.95oz
Package Size: 22.0*20.0*8.5cm/8.66*7.87*3.34in
Package Weight: 403g/14.21oz