The Deca Drive is designed for road cyclists, but it also has the power to handle unlit paths and dark lanes. The unit is self-contained, which is rare for a long-running light this powerful.
At 110 x 58 x 35mm and weighing over 300g (with the mount) the CNC-machined Deca Drive is a pretty substantial unit. The all-aluminium construction, with metal hinges on the sealed battery compartment and its micro-USB charge port, oozes quality and will take the hard knocks.
This 'Loaded' version will get you a hard case for the light, a second battery and substantial CNCed brackets for 31.8mm and 25.4mm bars. The thumbwheel bolt and rubber liners have proved secure and vibration-free even off-road.
Run time is impressive. A single button scrolls through five settings, ranging from 16 hours of flashing at 150 lumens through the 'Enduro' setting – three hours constant at 400 lumens – to the powerful 'Blast' mode: one hour 50 minutes at 700 lumens. Need more? The 'Overdrive' mode ups the power further to 800 lumens for 90 minutes. A full charge from a USB port takes 10 hours, but using a mains adaptor halves that.
The Deca Drive makes the most of decent electronics with a well-designed lens that throws out plenty of peripheral light, with the central beam focused a good 10m in front of you. It's very impressive, and only matched by the similarly priced Cateye Volt 1200.
In non-Overdrive it packs more than enough punch for fast riding on unlit roads, and using a combination of modes gave us 3.5 hours on a night road ride. In Overdrive it'll cope with off-road singletrack rides, matching most dedicated off-road two-pack systems.