. Despite its small size and ultra-low weight, Cateye’s Rapid Mini Rear Light still has all the features of its bigger brothers, the Rapid X and X2. Designed for those who prefer a more minimalist design, the Rapid Mini offers 4 illumination modes and is changed via a convenient USB connection. Get Home Safe. You’ll also benefit from Cateye’s battery auto-save mode, which as the battery gets low, switches the light into an eco-mode to get you home safely. There’s also a low battery indicator light and a mode memory, which makes it even more user friendly Features: Light Source: Red LED x3 Power Source: Li-ion USB rechargeable battery Light Modes: 4 Run Time:Constant: 2 hoursFlashing: 30 hoursRapid: 5 hoursPulse: 20 hours Charge Time: 2 hours (USB 2.0) Mounting: 21.5-32 0mm (FlexTight SP-14-R) Extra Features: Battery auto save, low battery indicator, light mode memory Dimensions: 52.2×20.0x31 6mm Weight: 21 5gBuy Cateye Accessories at Chain Reaction Cycles, the World’s Largest Online Bike Store.