The rebirth of an iconic bicycle light, the Frog Bike Light Set: bright, versatile & fun. A design that millions of riders around the world have come to love. Powerful enough for everyday commuting or used to complement an existing lighting set-up. Taking cues from Knog's more advanced lights, Frog is designed with Chip on Board LED technology, enabling a high-intensity light that's compact, low profile, and packed with features. Features: Punchy 40 lumen front & 20 lumen rear output. COB LED Technology - Efficient Chip on Board (COB) LEDs provide maximum brightness level for up to 90% of the battery burn time. Advanced Side Visibility - COB technology allows the LEDs to be arranged on a curved board, projecting light from the sides & adding to rider safety. One Button Operation - A single large, easy press button makes the operation of these lights super simple, even in gloves. Integrated Flexible Mounting System - With no tools required to mount Frog and featuring an integrated flexible strap, Frog is easily mounted anywhere. Specifications: Bulb Type - Chip on Board (COB) LEDs. Light Max Output - Front: 40 lumens / Rear: 20 lumens. Run Time - Front: up to 80 hrs / Rear: up to 60 hrs. Programmable With ModeMaker - No. Waterproof - Yes, IP65 rating. Light Modes - 9. Rechargeable - Yes, USB-C. Low Battery Indicator - Yes. Fits Handlebars - 22 - 32mm+ diameter, plus head tubes to 7.9 inches. Dimensions - H: 80 mm x W: 35 mm x L: 42 mm. Weight - 40 grams. Operating Temperature - -20 to 50 °C / -4 to 122 °F. Strap Material - Medical grade silicone. Optimum Charging Temperature - 20 to 22 °C / 68 to 72 °F (Room Temperature).