Headlights + Taillights is more costeffective If you need to purchase please click on the image below About Charging Please use the charging cable included in the package to charge otherwise it may cause damage to the lights Product Details COB LED. 1.Full 6061 Aluminium alloy chassis. 2.Automatically turn on/off depending on the light intensity and motion. 3.Automatically switch to sleep mode to save power. 4.Seat rail mounting 5.4 flash modes. 6.20hrs+ run time. 7.400mAh Liion rechargeable battery. 8.USB charging. 9.Battery indicator ( flashes every 6 seconds) 10.Compact and Light weight design (55g). 11.IPx6 Water proof. Smart Light Sensing Using highly sensitive smart sensor chip Able to correctly detect vibration and braking action COB LED +Ensca lens High visibility at night but not dazzling Comparison Of Old & New Technology Compared with the old taillights the new Q5 taillights use more technical quality lamp beads and lenses. Make the light soft not hurt the eyes more secure and stable. Old Modelfog Lens Low cost simple process soften light by reducing brightness Q5Optical Lens High cost complicated process keep light transparent and bright without glare Old ModelLED Patch Low cost simple process and short life More dazzling at the same brightness Q5COB Inversion High cost complicated process Longer life more stable Softer at the same brightness Brake SensingIntegrated Accelerometer Q5 comes with a builtin accelerometer/ high performance MCU and powers by the threelevel digital filter algorithm which ensure correct detecting a brake Shock Sensing Automatically turn off the lights when there is no vibration for 30 seconds and turn on automatically when you feel the vibration (Except in constant light mode) Smart Light Sense Builtin light sensor Works in harmony with vibration induction Smart start and stop saves power The strobe and constant light modes are manually controlled and are not affected by the sensing element The SOS and Bright modes are manually controlled and are not affected by the sensing element Battery Indicator The indicator light flashes every 6 seconds prompting the current battery Switch modes at will Click to switch the flashing mode: FlashingBreathingSOSShutdown IPX6 Waterproof Design Proper to any abusive environment Compact and Lightweight design CNC Aluminum Alloy Shell Antiscratch and antifall