Product name: retractable earphone 
Product model: BP-SR5 
Earphone type: Wired
Wearing manner: In-Ear 
Microphone: None 
Connectors : 3.5mm
Vocalism principle: Moving coil 
Speaker diameter : 10mm 
Frequency range: 20-2000Hz
Sensitivity: 42dB/mW 
Impedance: 32Ω 
Distortion rate: 2%
Shell material: Pure ABS material 
Cord length: 100cm
Weight: 20g
Retractable life time : >5000 times
Certification: CE,FCC 
Logo: Customization
Colors: Black, Blue, Green, Orange, Purple, Red, White
Packing: Plastic bag 300pcs/carton; Carton size: 46*30*30cm; Blister Or Customized.
Application: MP3 headphones, phone headset, music headphones, sound headphones, computer headphones.