Compatible with Alpina Heated Liners Say Goodbye to Cold Feet Only Alpina boots feature the exclusive InTemp control system, a fully integrated heating system designed to keep your feet warm and comfortable, all day (and all night), no matter the weather. Ready to use with the simple push of a button, it runs at full-power for initial warm-up, then automatically returns to normal power, so feet are optimally warmed but never overheated. And charging is simple, as the entire system – batteries and elements – is fully integrated inside the boot. Smart Control Ready to use with the simple push of a button, the system runs at full-power for intial warm-up, then automatically returns to normal power, so feet are optimally warmed but never overheated. Battery Batteries are fully integrated inside the boot, and also easily changeable. InTemp is powered by a rechargeable 7.4V Lithium battery in the cuff of each boot. All components are fully water-proof and the systems is not affected in any way if the water enters the boot. Charging The boot's charging input is small, discrete easily accessed and weather-proofed, Smart and simple – no need to disassemble the boot to charge. For charging plug the y cables of the charger into the plug on the back of each liner and plug the charger into a standard household socket. All Weather Comfort To turn the system on press and hold the button for 2 sec and see the red flash. Flashing red light means pre-heating (100%), which is on for 5 mins. After 5 mins it turns into red (high setting, 75%) automatically. You can set medium setting (50%) with one click to blue LED light, and with one click back you can return to red (high setting). To turn the heating off, press and hold the push button until the LED light go off.
