Specification: 
· Bluetooth type: CSR8635 active noise cancellation · · · · ANC Bluetooth headphone
· Speaker Unit:  40mm
· Frequency range:20~20KHz
· Active cancellation: 20~25dB 
· Power: 3.7V  360mah
· Blue-tooth version: V4.0
· Playback Time (Bluetooth only)::16hs(Bluetooth ), 14hours(ANC)
· Charge Time (Bluetooth only):2hs
· Operation distance:10m, Range (Bluetooth only): 10m                    

 Feature:
· Magnet: Neodymium
· Sensitivity: 105+/-3DB
· Impedance:32 ohms+/-10%
· Gift box size:225×153×56mm
· Carton size:49*48*31cm    
· Pcs/ctn:28pcs
· N.W:15KG
· G.W:16.2KG                                  
· Products weight: 528g（With package ）
· Earbud Material (if applicable):Protein leather