1. Retractable spring design, AAA/AA batteries can be recharged
2. With a charging indicator, it will light up red when charging, and it will light up when fully charged
3. USB interface, a variety of power supply methods, convenient and fast
4. Rated power: 2-5W
5. Input: DC 5V 1-2A
6. Output: DC 1.2V 250mA
7. Rechargeable battery: AAA/AA
8. Charging time: about 3-5h
9. Power interface: USB
10. Dimensions: about 8.3 x 6.3 x 2.4 cm
11. Weight: about 45 grams
12. Description: only the charger, not the battery in the picture