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Exposure Strada Mk4 $0.00
The requirements of on-road lighting systems are different enough from off-road systems to demand their own design parameters. Exposure's Strada Mk4 Bike Light features the same high-tech resin lens technology as the rest of Exposure's lights, except with a distinct beam pattern for better light dispersion on paved surfaces.
The lens is specifically designed to maximize light collection from the two Cree XPG R5 LEDs and efficiently produce a flat and wide pattern to light the shoulder and road ahead without disturbing oncoming cyclists and motorists alike. And, with a 25% boost in output to 800 lumens, not blinding other road users becomes crucial. Adding to that safety is a remote switch. The switch allows you to shuffle between the 'dipped beam' and bright without having to remove your hands from the bars. Another safety oriented feature is Exposure's Smart Port Technology Plus. Essentially, it's a cylindrical plug on the back of the lamp unit that allows you to insert the smart charger, but, it also enables you to plug in accessories like a red LED taillight and back-up batteries, or to charge other USB-powered devices. It will automatically recognize each accessory and configure the system to take a charge or power accessory lights. Powering the Strada Mk4 is a 8700mAh Lithium ion battery that's packaged inside the CNC'd, aerospace grade aluminum housing.
The extensive machining, however, isn't just to look cool. It's actually designed to help heat transfer -- to physically cool the light. Packing two Cree XPG R5 LED's, the Strada Mk4 can generate excessive heat. One way it's managed is through the weather-tight body, the other way it's managed is with Exposure's patented Intelligent Thermal Management (ITM).
If the internal temperature gets too high, ITM kicks in and automatically drops the power level down to the next lowest setting. It will remain at the lower setting until the temperature inside the housing returns within normal operating range. This, and the weatherproof housing, ensures the light's battery and LED bulbs are safe from moisture, muck, and heat for a long life span.
A new feature found on the Strada Mk4 is Exposure's Optimum Mode Selector. OMS offers eight preprogramed settings to provide the optimal lighting for ride conditions. After all, the requirements needed for a high-paced night ride are quite different than a week of commuting -- and OMS lets you tune the light for any of those conditions.
For example; in the first OMS setting, the Strada Mk4 will push 800 Lumens for 3hrs in high, medium gets you 10hrs at 300 Lumens, and low nets 140 Lumens at 24 hours. Or, you can select the second mode that allows greater battery life by knocking down peak output to 520 Lumens for a 5 hour run time.
The OMS modes are selected using the power button located on the back of the unit. The new info display resides under a clear silicone covering with color mode LED's that double as the OMS display indicator and a fuel gauge. The Exposure Strada Mk4 comes with a 31.8mm handlebar clamp and shims for 25.4mm bars.