An acctim red sprint stopwatch tim901r is a versatile and accurate stopwatch for precise timing it features both lap and split timing up to a maximum of 24 hours with precision down to 1100th of a second this multifunction stopwatch also features an integrated alarm the digital display has a green backlight so you can easily read it even in the dark and its water resistant as well the included neck lanyard makes it conveniently portable stopwatch with integrated lap and split timing