1. Material: ABS+silicone+electronic components2. Size: 26 x 26 x 4.5cm (expanded)3. Net weight: 336g4. Gross weight: 430g5. Battery voltage: 3.7V6. Input current: 1A7. Input voltage: DC 5V8. Features: hanging neck shape, universally adjustable wind, brushless silent operation, 5 hours of battery life, three-speed wind, no leaves and no hair9. Power supply mode: USB/built-in lithium battery10. Charging time: about 5 hours11. Battery capacity: 2000/4000mah12. Working time: about 12 hours for the first gear, about 8 hours for the second gear, and about 5 hours for the third gear13. Packing list: fan + USB cable + manual

http://olla.gr/g2-hanging-neck-leafless-fan-outdoor-student-sports-mini-usb-silent-fan-colour-2000mah-night-green/