• Digital up/down timer displays heat index, humidity and temperature. • Stopwatch mode with 1/100 second resolution. • User settable Heat Index alarm. • Fastest/Slowest/Average lap recall. • 99 lap counter with 30 lap/split memory. • 10 hour countdown timer with audible beeper warning for the last 5 seconds. • Programmable alarm. • Calendar mode displays day, month and date. • 12 or 24 hour clock operation. • Complete with 39” lanyard and one 3V CR2032 battery. • 1 year warranty. Specifications Timing capacity: 9 hours, 59 minutes, and 59 seconds Heat index: 22 to 50°C (70 to 122°F) Temperature range: -10 to 50°C (14 to 122°F) Humidity range: 1 to 99%