Style A Features: With 5 superbright Red LED indicators and 2 laser beams design, easy to be noticed at nightLED indicators and laser beams can operate simultaneouslyThe "bike logo" can be projected behind the bike so as to warn the behind vehicles to keep safe distanceWith an adjustable clamp, easy to install and removeThe LED indicators and laser beams have 4 flashing modesAuto-off after parking about 5 minutes to reduce power consumption Specification: Durable & fine workmanshipBattery: 2x AAA battery (not included)Switch: 2 buttons (On, Off and mode select)Waterproof level: daily life waterproofLighting color: redCasing color: black & redSize: approx. 8.6 x 3.1 x 4.9cmBicycle mount fits approx. 20-36mm diameter tube NO.4 Beam "bike Logo" Style B Description LED mode: long bright, high frequency and slow flash.Waterproof function allows you to go out even on rainy days.Tough and thin and adjustable buckles, resilience to impact and good elasticity.Safe and power saving. It can work continuously for 9 hours at maximum power.Due to the difference between different computers, the picture may not reflect the actual color of the item. Specification Material: shown as pictures.Lighting type: red parallel line, blue parallel line, red starlight.Size: 80*70*33mm. Package included: 1* LED bike tail light(without battery). NO.1 Parallel line red NO.2 Parallel lines blue NO.3 Gypsophila Ultra Bright Bike Tail Light Bicycle High Intensity 5 LEDs Warning Acceories for Mountain Bike