Specifications:
Brand Name: Andoer
Model Number: LH-811
Support Profiles: HSP, HFP, A2DP, AVRCP;
Bluetooth version: ISSC4.1 + EDR
Profile and Advanced Audio Distribution Profile(A2DP)
Operation Distance: 10m; 
Transmitting Power: Class 2
Frequency Range: 2.4026 GHz一2.480 GHz
Resistance: 32ohm
Sensitivity: 105dB+ / - 3dB
Plug Type: 3.5mm 
Audio cable length: 1.2m / 3.94ft
Earmuff Diameter: 7.5cm / 3.1in
Rechargeable lithium battery: 300mAh
Talking Time: 8 hours
Music Playing Time: 10 hours
Standby Time: 120 hours 
Charge Time: 2-3 hours
Color: Gold, Blue, Black, Red, Purple, Rose Gold, Orange,Green (Optional)
Main item size (Foldable): 18.5 * 16.0 * 7.5cm / 7.28 * 6.29 * 2.95in
Item weight: 163g / 5.76oz

Package List:
1 * Bluetooth Headphone
1 * USB Cable 
1 * Audio cable
1 * English User Manual