DT-350 1. 3 LED light; 2. 15000mcd blue diode 3. material:ABS; 4. no dry battery required for it is hand crank generate 5. can do prepare charge for mobile phone anytime 6. one minute hand crank can light 20 minutes 7. three minutes charge can support 2-8 minutes talking for cell 8. output current:Max 400mA; 9. output voltage:Max 4.5V; 10.size:101x51x33mm; 11.net weight:113g 12.Nickel Metal Hydride (NiMH) battery. 13.3.6V, 80mAh