Strauss Dual LED Bicycle Rear Tail Light | Waterproof Cycle Light | Portable High Visibility LED Light for Safety | Cycling Accessory for Night & Day Riding| Size: Universal Super Bright & Wide Beam-180 degree super bright red light, makes you be seen in the daylight or night and Powerful, Tough plastic body, Water resistant. Water Resistant- Use in dry & wet weather conditions and Easily mountable and detachable, Long life. Install & Remove in Seconds without Any Tool and Three-mode red LED taillight with two 0.5-watt LEDs It Always bright flash, slow flash, flash back, right to left and left to right, and forth Light, Flashing modes, changing by pressing the LED button, satisfied your needs in different situation. Two powerful 0.5-watt LED bulbs are built in the taillights, which use three eye-catching modes to protect you and your bike from rear collisions.