Handle is a research robot that stands 6.5 ft tall, travels at 9 mph and jumps eet vertically. t uses electric power to operate both electric and hydraulic actuators, with a range of about 15 miles on one battery charge. andle uses many of the same dynamics, balance and mobile manipulation principle found in the quadruped and biped robots we build, but with only about 10 actuated joints, it is significantly less complex. Wheels are efficient on flat surfaces while legs can go almost anywhere: by combining wheels and legs Handle can have the best of both worlds.