Powerbeats Pro 2 announced with heart-rate monitoring
Features a new design, acoustics, and the Apple H2 chip. Beats has announced the Powerbeats Pro 2, the latest generation flagship model in the ...
The Economist6 天
Fighting the war in Ukraine on the electromagnetic spectrum
F OR SOLDIERS at the front, electromagnetic defences are as vital as air: invisible when present, and disastrous when not. In ...