Description: 
Rated voltage: DV5 (V) 
Cabinet Material: Plastic 
Distortion: 2 = 10 (%) 
Speaker Type: mini speaker 
Audio Category: Speakers 
SNR: 80 (db) 
Power Rating: 4 (W) 
Speaker structure: Bookshelf 
Impedance: 4 (¦¸) 
Speaker Interface: Induction 
Rated frequency :800-18000 (HZ) 
not include phone
Mutual induction speaker---
*Support any mobile phones,and MP4/MP5
*Speaker box,no bluetooth, no WIFI,no configuration
*It is not NFC technology.It is Near field audio,it works by inducting magnetic field
*Compatible with Apple serials, Nokia, HTC, Samsung and any other mobile phones with External speaker
*Support Mini USB audio in 
*Power output: 2*2W
*External 800mAh BL-5C or AA alkalinity battery
*Accessories: 2 in 1 audio line