. With 180 Lumens, the incredibly small, yet powerful, Gemini Iris LED Rear Light will let other road users know exactly where you are, allowing you to ride your bike with confidence Use the seatpost mount with an O-ring attachment to quickly mount the Gemini Iris to your bike, or opt for the clip mount to secure it to your backpack The Gemini Iris is powered by a high capacity, lithium ion battery. A quick 90 minutes of charging through a USB port will get you up and going again with a full battery Designed as a high-performance safety light, the Gemini Iris will last a full 12-hours of continuous usage. Ride through your nightly commute comfortably, and when it’s time to charge, the indicator will let you know To give you ultimate control, Gemini has designed the Iris to be user programmable and given you four flash modes to play with. For each mode, you can choose your preferred brightness with adjustable levels of 10, 30, 50, 100 and 180 lumens Features: Brightness: 180 lumens Battery: 900mAh lithium ion battery with built in battery level indicator Modes: Low flash, high flash, low pulse, high pulse, adjustable brightness levels 10-180 lumens Material: Hard anodised Aluminium Safety: Low battery warning and battery overcharge protection In the Box: Iris rear light, USB charging cable, seatpost mount and clip mount, silicone O-rings Weight: 42gBuy Gemini Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.