Decades: 1990s 2000s 2010s 2020s 2030s - 2040s - 2050s 2060s 2070s 2080s 2090s
Years: 2040 2041 2042 2043 2044 2045[?] 2046 2047 2048[?] 2049[?]
... to incredibly high revs by following a circular wrist motion with the device. Modern devices come with electronic rev counters and light emitting diodes powered by a ...