External battery for iPad with Audio

1. Model: HSTD002
2. Voltage: 3.7V
3. Capacity: 6300mAh
4. Input Voltage: 5.3 ~ 5.5V
5. Input current: Max 5.5A
6. Output Voltage: 5.0~5.5V
7. Output current: Max 4.5A
8. Charging time: About 10 hours
9. Discharge time for iPad: About 6.5 hours
10. Warranty: 12 Months
Audio Description:
Output power: RMS 4W(2W+2W)THD=1%
Frequency response: 150-18000Hz(+=3dB)
SNR: Equal of or greater than 80dB
Speaker: 30MM 4 ohm
Use for iPad Tablet PC / iPhone 3GS 4g with Speakers series
1. Perfect parterner in office with rechargeable function.
2. Upside down as stand for TV for your convenience.
3. Two external sould boxes being put inside connected with iPhone series.

Payment accepted:
T/T to our HK HSBC account; Western Union(500-2000USD); PayPal(100-500USD); Moneygram.