SD card Muitemedia speaker

Function:
1, Optional color: silver red pink blue
2, Using wallyson double track sound, bass overtones
3, Support LED LCD display
4, Support FM radio (can be broadcast)
5, Support rechargeable lithium batteries, can replace/long life
6, Support SD card + TF phone card + USB interface, play the music memory CARDS
7, Support the sound input interface 350 MM
8, Support 3.5 MM headphone output interface
9, Support temperature display
10, Support mobile emergency charging

Technical parameters:
1, Output power: the RMS 2.4 W * 2 = 10 THD (F = 1KHz),
2, Frequency response: 80Hz-20KHz ~
3, Signal-to-noise ratio: more than 80dB
4, resistance: 4 ohm
5, Power supply: DC5V or USB + 5V battery parameters (machine),
6, Nominal voltage: 3.7 V
7, The rated capacity: 500mAh
8, Battery limit voltage: 4.2 V
9, Execution standard: GB/T 18287-2000
SD card Muitemedia speaker