The Stix Elite uses its own USB key to dock into the flexible rubber seatpost mount, where a rubberised cover snaps into place to keep it secure. Water can still get in though, and the key can get pretty wet during downpours, so it’s important to make sure to let the light dry before recharging it. There are two constant modes, but we elected to use one of the four flashing settings to string out battery life. Specialized claim the light will last a whopping 77 hours on ‘Eco Flash’ mode, with charging taking just 2.5 hours. A red/green battery life indicator makes it easy to see when it needs topping up. The Stix Elite’s compact size and standout visibility (Spesh claim it puts out 68 lumens in its brightest mode) mean it’s a great little rear light to carry in your pack in case the light starts to fade when you’re on your way home from the trails. Price $45