This product is a multi-function smart digital portable power supply. Use American high efficiency step up IC, own smart voltage adjust technology. Automatic identify discharge voltage and current. Very strong safety protection. Exquisite and stylish Aluminum alloy case. High capacity built in polymer Li-ion battery. You can charge your mobile phone, digital camera,PDA,PSP,MP3,PM4,IPOD,DV and other digital products everywhen and everywhere. PRODUCT PERFORMANCE 1. Smart charge function: Stage charge, prolong battery work life 2. Temperature compensator function, heat adjust and heat cut off function 3. PWM Pulse control constant voltage 4. Smart protection function: over charge, over discharge, over load, reverse, short circuit, lightning proof 5. 3 step voltage adjust to comply with different digital products 6. LED indicate built in battery electric energy PRODUCT SPECIFICATION 1. Built-in battery: 3.7V, 3000mAh high capacity polymer Li-ion battery 2. Output voltage: 5.5V / 9V / 12V 3. Output current: 1800mA/ 1500mA/ 1000mA 4. Full recharge time(AC adaptor): 3-4 hours 5. Work time(After full recharge): 3-5 hours 6. Work lift: no less than 500 cycles 7. Work temperature: -30℃ ~ 50℃ 8. Dimension: 86 X 69 X 17 MM 9. Weight: 112g FITS FOR Mobile phone