1. Len: 52mm Hyperboloid lens
2. Power: DC 5V+/-0.3V Micro USB charging
3. Battery: 3.7V lithium polymer battery, 350mAh
4. Working time: about 25 hours
5. Campatible phone: over Android 4.4 / iOS 8.0
6. Size: 140 x 181 x 115mm (after folding)
7. Net weight: 420g