This artificial muscles robotic arm is operated by water and consumes 200W at peak. The hand weighs 1kg (2,2 lbs) and the dumbbell weighs 7kg (15,6 lbs). The portable power supply and valves have complete controllability of speed contraction and can compress the whole powering system. The movement sequence was written and sent by simple commands to the hand. Image/video credits: Clone #engineering #technology #robotics #bionic #mechanical | Wevolver.com

This artificial muscle lifts 1,000 times its own weight, but only costs $1 to make. | Mashable