The Femto Drive Rear is an incredibly compact safety light. It has an integrated lens on/off switch. Made from CNC - machined aluminum, it's super durable. The Side Visibility Lens extends beyond the body, giving you a full 180 - degree visibility. Powered by two replaceable CR2032 batteries, it can light up one bright LED up to 7 lumens with five output/flash options. Its patented 2 - in - 1 clip/strap system is very versatile, allowing you to attach it to handlebars, saddle bags, pockets, or straps. Max Lumens: 7. Max Runtime: 60 hours. Recharge Type: CR2032. Weight: 26g. Dimensions: 40.6mm, 26.1mm, 40.4mm. Features: IPX7.

Using this Lezyne Femto Drive Rear Light is a breeze. First, insert two CR2032 batteries into the light. You can turn it on or off using the integrated lens switch. To attach it, use the 2 - in - 1 clip/strap system. You can strap it to handlebars for cycling or clip it to saddle bags, pockets, or straps for other uses. When it comes to maintenance, make sure to keep the light dry as it has an IPX7 feature, but don't submerge it for too long. Replace the CR2032 batteries when the light starts to dim. Also, avoid dropping or hitting the light as the aluminum construction, though durable, can get damaged.