Knuckle Lights are designed to be worn on the front of your hands in a perfect position to light your path and be seen on your next walk or run in the dark Knuckle Lights Advanced includes280 TOTAL LUMENS The super bright lights provide a wide flood beam providing a steady even light in front of you that does not bounce even with your arms movingCHARGING DOCK Simply place the units on the charging dock after each use and they will always be fully charged and ready to go2 LIGHTS PER SET The units connect together magnetically The soft silicone straps are easily adjusted to fit any size hand and even over gloves The units are almost unnoticeable at less than 3 ounces each3 POWER SETTINGS High Low and BlinkingBATTERY LIFE PER CHARGE 5 Hours on High Power 10 Hours on Low Power 16 Hours on BlinkingWATERPROOF The units are fully waterproof and can be used in any type of weather and will operate in below freezing temperatures down to 40 Celsius