Specification
Bluetooth Headphone:
Bluetooth V4.1
Supports profiles: headset, handsfree, A2DP, AVRCP
Audio codec: Fast stream, SBC
Operation range: Class 2, 10 meters
Up to 40 hours music time and 20 days standby time
Driver size: 40mm
Impedance: 32 ohm
Frequency Response 20Hz-20KHz
Headset size: 180mm x 170mm X 80mm
Earpad inner diameter: 6.3cm (length) * 4cm (width)
Earpad outer diameter:10cm (length) * 8.5cm (width)
Headset weight: 180g

Bluetooth Transmitter:
Bluetooth 4.2
Bluetooth profile: A2DP
Audio codec: aptX-LL, aptX, Fast Stream, SBC
Operating Range: Up to 30 meters
Product size:48mm(L) x 48mm(W) x 15mm(H)
Weight: Body approx 16g