The Exposure Blaze MK3 DayBright ReAKT Peloton Rear Light is a premium, versatile rear light that has two advanced rear light technologies merged with a hefty run time. From short urban commutes, to time trials and the peloton all the way to your transcontinental adventure, this light has you covered. Intelligent rear lighting - Rear lighting that flares up automatically under braking. It can also intelligently adapt to the surrounding ambient light conditions to maintain maximum contrast and visibility, for example brightening for street lit areas and moving into sunlight from shade. Optimised Mode Selector - Various programs in the lights can easily be selected to offer a choice of run times and modes so you can find the right one for your ride, be it an all-night adventure or an intense blast. Exposure Blaze MK3 DayBright ReAKT Peloton Rear Light Features LED Configuration: 1 x Red XPE-R Lumens: Max 80 (ReAKT 150) Battery: 1500 mAh Lithium Ion Runtime: 6 - 48 hours Rechargeable: Through Case USB Charge Time: 4 hours Weight: 77g Material: Anodised 6063 Aluminium Water Resistance: IP6 Length: 70mm Head Diameter: 28mm In The Box: Blaze MK3 ReAKT, Seatpost Mount, USB Charge Cable, QS Guide