ABS material can be stable and durable; 3LED lamp provides lower power consumption and ultra long lifespan, brighter than normal lamps; Detachable and adjustable headlamp bracket design convenient for installation, suitable for most of bicycles; Easy to replace the battery, only support 3* normal AAA batteries, please not to use rechargeable batteries to prevent circuit burned; Dual switch design, back switch control the electronic horn, 80dB 4 tones horn can be as good bicycle warning bell, front switch is the LED headlamp switch Due to the head light is too hard, cant irradiate on human eyes straightly; Item Type: Bicycle Headlamp; Material: ABS; Function: Lighting, Bicycle Warning Bell; Light Type: LED; LED Quantities: 3pcs; Brightness: 20LM; Battery Type: 3* AAA Battery(Not Included); Application: Most of bicycles.