(1) How many times have you been unable to make a call on your mobile phone because ... battery has gone flat? If your answer is at least once, then there is ... good news in the form of a dynamo powered by human motion.

(2) This new gadget could put ... end to the excuse of a flat battery. Even on a gentle stroll the gadget generates enough energy to run a mobile phone. Although the device is quite large, it has little effect on the wearer. During initial trials, the invention was worn by six people walking on a treadmill (бе­го­вая до­рож­ка) at ... speed of three kilometres an hour.

(3) With two devices, one on each leg, the volunteers generated just under five watts of electricity. The test results were excellent, but the inventor believes that improvements need to be made. His first aim is to make ... device even easier to carry than it is at ... present.