1.Always turn off the pen light when charging .
2. This device is designed for slow charge
it takes 10 hours to fully charge the batteries.
it takes 10 hours to fully charge the batteries.
3.Battery: 2X2/3 AAA/300mAh rechargeable batteries.
4.A. light bulb
B. ON/OFF switch.
C. USB charger
B. ON/OFF switch.
C. USB charger
5.You can print your owner logo.