The Otium Knight Series Headphones adopts unprecedented technology with black steel, and advanced Bluetooth chip, just surrounded by the premium quality sound from your own knight.
Bluetooth Chip: CSR8645
Bluetooth Version: 4.1
Bluetooth Protocol: A2DP V1.2, AVPCP V1.4, HSP V1.2, HFP1.6
Modulation System: GFSK
Power: Class 2 (10 meters,33 feet)
Bluetooth Distance: 15-20 meters
Frequency Range: 20Hz-20KHz
Microphone: MA-BFA423-A13 /-42±3dB
Battery: 400822/120mAH/2*60mAH
Charging time: 2 hours
Charging Voltage: DC 5V
Talking Time: 8 hours
Play Time: 8 hours
Standby Time: up to 270 hours
Weight: about 30g
Headphones Size: 34.2*12.4*9 mm
Remote Size: 42*10.6*6 mm
Headphones Material: Stainless Steel 304(Mercerizing/Vacuum Plating)
Wire Material: TPE