Optimum Time Watch Optimum Time Ultimate Event Stop Watch, Oe385, Suitable For Eventing, Carriage Driving Trials & Pony Club Events Comfortable Design, Featuring A Count Up And Down Mode Plus Alarm Sleeve Wearingwater Resistant To 5 Atmshock Resistant Constructionnormal Time Keeping Mode (24 Or 12 Hour)Specialist Eventing Timekeeping Functions:Count Down From Programmable Time With Alarm At Zerocount Up From Zero With Minute Marker Alarm