The Lezyne Femto Drive is a compact, bright, safety light. The lens is made of high-grade optical material and serves as an activation button that cycles through four flash and one solid mode. The aluminum body makes the Femto Drive a durable and weather resistant light. The Composite back plate can be unscrewed to replace the two CR2032 disposable batteries. The multi-position silicon rubber strap attaches directly to the back plate to secure the light to a wide range of handlebar and seat tube diameters.
Max Lumens : Front 15 Rear 7
Flash : 60 hrs
Regular : 30 hrs
Weight : 22g
Colours : blue red silver black
Cost: £12.99 each or £21.99 for front/rear
I purchased mine from the Giant Guildford Store (other retailers are available) or see lezyne.com
I’ll update this post once I’ve used them for a while