. A twinpack of medium sized bike lights that are bright and convenient including a 320 lumen front light and a 170 lumen rear light Light Modes. Both lights come with a range of light modes including flashing and constant which can easily be switched between by holding down on the power buttons. The light modes included are:Front LightMax: 200 lumens – 2.5 hoursMid: 80 lumens – 5 hoursSteady Pulse: 320 lumens – 9 hoursFlash: 320 lumens – 9 hoursRolling Flash: 140 lumens – 8 hoursSide Flash: 200 lumens – 3.5 hoursDisco Flash: 160 lumens – 7 hoursEco Flash: 25 lumens – 120 hoursRear LightMax: 75 lumens – 2 hoursMid: 35 lumens – 3.5 hoursSteady Pulse: 170 lumens – 2.5 hoursFlash: 170 lumens – 6.5 hoursRolling Flash: 70 lumens – 4.5 hoursSide Flash: 100 lumens – 2 hoursDisco Flash: 80 lumens – 4.5 hoursEco Flash: 15 lumens – 100 hoursMounting. The lights are easily mounted to most types of bike frames with two types of mounting systems included. Firstly, the lights come with integrated, silicon strap systems that offer quick release which is brilliant, especially, for commuters. Secondly, the lights also come with aero mounts USB Rechargeable. For quick and easy charging on the go the lights both come with internal lithium polymer batteries with exterior USB plugs that are designed to be completely weather resistant. The USB plugs allow you to charge the lights via any standard USB port without the hassle of charging cables Features. Up to 8 different light modesIntegrated USB plug removes need for charging cableInternal rechargeable lithium polymer battery4 hours full recharge timeTool-less removable silicone straps for bars/seat posts 22-32mm diameter with magnetic mountAero mount also includedEfficient Chip on Board LEDs designed to provide maximum brightness100% waterproof against all the elementsEach light weighs 44gDimensions: 62mm x 33mmBuy Knog Bike Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.