The Mammut Smart Alpine 8.9-10.5 Belay Device is the alpine version of the award-winning Smart Belay Device. The Smart Alpine can be used with half ropes as well with single ropes, making it the ideal companion for all alpine rock and ice pursuits. The Mammut Smart Alpine 8.9-10.5 Belay Device offers dynamic braking of your climber in a fall and can be used to independently belay one or two second climbers in an autolocking mode from the fixed point. The device is for use with rope diameters of 8.9 - 10.5 mm. Weighs 135 g.