What you receive: package comes with 1 piece of cap hat lights, the cap headlamp is powered by 2 x CR2032 button batteries, uses 5 bright LEDs, and can put out 30 lumens (max) brightness Easy to control: featuring 90 degree rotatable head, with it' s easily accessible power switch and small footprint design, the clip on cap light attaches to the brim of most caps with a visor or hard-hat in seconds or may also be applied as a handheld flashlight Durable material: adopting water resistant and weather resistant resin, this hat flashlight is made with toughness in mind, can be applied for long time, easy on/ off operation provides you a good using experience Ultra lightweight: the hat visor light features a compact size of approx. 2.16 x 1.97 x 1.11 inch, weighing less than an ounce, so there is no burden when clipping it onto your hat and you won't even feel any weight on your head Widely applicable: this waterproof ball cap light is bright enough to use on the job, at home or in the field, especially suitable for camping, hunting, fishing, mechanical repairs, walking at night, or emergencies Product Description Small size and light weight There is no burden when clamped on the hat. One-button power button Convenient for you to easily turn on/off operations. Powered by 2 CR2032 button batteries The package includes 1 cap light