Its equipped with an integrated USB stick for cable-free charging, and its battery provides up to an impressive 30 hours of runtime in Femto Mode. The Stick+ Drive Rear emits up to 40 attention-grabbing lumens in both Blast and Day flash modes.A simple O-ring mount securely attaches to most bicycle seat posts while an innovative magnetic interface allows the light to easily detach from the mount for quick and easy charging accessibility. With its narrow design and compact mount, its the perfect taillight for those looking to maintain aerodynamics or attach to seat posts with minimal space, e.g. dropper posts. Designed and produced in-house, the Stick+ Drive Rear is engineered and built for long-lasting durability and impressive water resistance.Key Features:Max Lumens: Max 40 lumensOutputs: 6 combined solid and flash output modes including a highly disruptive Daytime Flash modeBattery Capacity (mAh): 210Recharge Type: USB rechargeable (integrated USB stick for cable-free recharging)W