WHAT ISSEEMEE 60? SEEMEE 60 is a bike taillight with high powered COB red LED light source, the max output is 60 lumens, and is capable of 180 degrees of visibility WHAT ARE THE FEATURES? *SMART BRAKE SENSOR LED BIKE REAR LIGHT--Built in sensor will activate the brake light feature when it detects a sudden change in motion pattern, and blinks in a series of super fast flashes at 60 lumens. If no vibration is detected in 60 seconds, SEEMEE60 enters into a dormant mode to save energy and is re-activated upon any movements. *USB RECHARGEABLE BIKE BRAKE LIGHT-- It is rechargeable via Micro USB. A full charge will take 1.5 to 2 hours under 5V/500mA, Charging light will turn from red to green indicating its built in Lithium battery has been fully recharged. *QUICK INSTAILL--Installation and removal of the taillight is super quick and easy, rotate 90 degrees to install and rotate 90 degrees back to remove. *WATERPROOF OF IPX6--Anodized aluminum surface crafted seamlessly around the red led surface allows the SEEMEE60 to be completely waterproof with an IPX6 rating. *MULTIPLE MODES--3 brightness levels, a constant mode and 2 flash modes can be used in any combo. * Size: 41x33x23mm. * Weight: 34g.