Stepless dimming ("+", "-"),long the "+", "-" on the back to adjust the brighness. Brilliant white LEDs for output up to400 lumen. Head light & cob light, totally 2 working mode. Adjustable head can be angled to 270 Degree. Charges from any powered USB port. Input and Output ports,can use as power bank outdoor. With magnetic base, can be hung or adsorbed on metal surfaces. Power display show at the back, 1 lamp represents 20% of the electicity. Battery can be replaceable. Specification: Type of bulb: 2 x 3W LED + 5W COB Colour:Black + Red Light color: White Material:Aluminum PC+ Size:15x4.8x3.9cm Package Contents: 3 x Working Light 3 x USB Cable 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.