A four-speed switch is added to the product One gear is always on The second gear is strong light The third gear is flashing The fourth gear is light off Use function: 1. Added a black reset switch button for better control 2. The DC head interface can be used to connect DIY tools and toys. 3. Applicable models such as One+ P743, PSK005.PBP2003.P107 and other models P series tool lithium batteries 4. Flash LED lighting system is suitable for many occasions 5. With two USB ports: charge two USB devices at the same time, such as mobile phones and tablets Specification: 1. DIY function DC12V/5A 2. Dual USB DC5V/2A/1A 3. With low voltage protection function Precautions: There is only one power adapter, batteries are not included. Color: Green Material: plastic Package Contents: 1 x Converter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.