Specification: 
· Bluetooth type:  CSR8635 active noise cancellation · · · Bluetooth headphone
· Sensitivity: 90+/-3DB
· Impedance:32 ohms+/-10%
· Frequency range:20~20KHz
· Active cancellation: 20~25dB 
· Power: 3.7V  500mah
· Blue-tooth version: V4.0
· Operation distance:10m
· Continuous working time:15 hours                    

 Feature:
· Gift box size:250×150×55mm
· Carton size:48*48*29cm
· Speaker Unit:  Φ40mm
· Magnet: Neodymium    
· Pcs/ctn:28pcs
· N.W:15KG
· G.W:16KG                                  
· Products weight: 515g（With package ）
· Earbud Material (if applicable):Protein leather