Features: 3 Channel Multi-Channel Timers, can start 3 Counttimers at the same for time (T1, T2, T3). Press the T1 button to start the T1 countdown, the T2 button to start the T2 countdown and T3 button to start the T3 countdown. Press the T1, T2 or T3 button again to pause the timer T1, T2, T3. Press again to continue the countdown. Press the CLEAR button to reset a timer setting or to reset all 3 timer settings back to zero when the timer is in pause status. Press the START/STOP button to recall or bring back the last setting. When the timer is reset to zero, a MEMORY message will apprear on the screen. and portable Mul-Channel Timer for Labortary, Factory....etc. Specifications: Color: White Power Supply: 2 x 1.5V Li-ion Button Battery.( Battery Included!) Clock: Display for Hr/Min/Sec(AM/PM). Count Up Timer: 99 hours, 59 minutes and 59 seconds. Count Down Timer: 3 sets, 99 hours, 59 minutes and 59 seconds, will bibibi for 1 minute once it reach the set for time. Timer Size: 8.8cm x 6.8cm x 0.5cm(LxWxH) Screen Size: 44x40mm Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Timer 1 x User Manual