Product features： Clip-on light uses 2pcs CR2032 button batteries for power supply (Batteries Not Included), last 48 hours，Easy to remove, easy to replace Adopts 1pcs LED bulb, long service life, super bright. The clip-on light can clip on the edge of glasses legs, cap, tights etc. 360 degree rotating clip allows for easy beam adjustment while attached to either right or left side. Personalized Design, friendly baffle for isolating light, preventing light from glare Easy to use, small size, light weight, and good maneuverability, the direction of the LED light is always consistent with the view no matter how the user's posture changes. It is a great helper for learning, reading, fishing，searching, repairing etc. Specifications: Material: ABS Plastic Battery2 x CR2032(not Included) LED:1pcs Product Weight:13g Product Size: 220mm X 360mm Package Content 4 x NUZAMAS Clip On LED Lights