Product Description Item specifics Power Supply: Battery Mounting Placement: Frame Model Number: Bicycle Lights Tip: suitable for bicycle with no more than 3cm in diameter Weight62.5g Description: This little laser beam tail light will ensure your safety while riding in the darkness. It has 5 LEDs and 2 laser bulbs. The LED and the laser work independently The length and position of the laser beam varies with the angle you mount the lamp Compact body type (weight 62.5 grams), professional design allows you to fully experience the joy of travel . Laser lights remind someone else of keeping distance, add safety! This little laser beam tail light will ensure your safety while riding in the darkness.(Note : Do not look directly at laser lights) Waterproof, safer in water fog when riding in the rain Meets IPX-II grade waterproof standard, tilt 15 degrees rain drops waterproof. Use for jogging, walking, bicycles, car emergency, horse-riding, Road emergency & camping, ETC. We recommends using 2 pcs No.7 900mA rechargeable NiMH batteries(or 2 pcs AAA batteries), it can work 9 hours of continuous functions in the case of fully open Note: This product didn't included batteries Package Listing: 1 x 2 Laser +5 LED Rear Cycling Bicycle Bike Tail Safety Warning Flashing Lamp Light