Compact interval timer with one or two intervals between two seconds and 99 minutes. Integrated stopwatch and clock function. Auto mode repeats by intervals up to 99 repetitions. Notification via ring and vibration interval alarm duration can be set to one, two, five or nine seconds. Increased water resistance makes it ideal for outdoor activities where the timer may be exposed to moisture, such as rain. Sweat and impact resistant. Has a very loud beep, making it perfect for group classes or outdoor use. The beep can be dimmer or muted completely by using only the vibration mode. Secure and removable belt clip included. Size of a small pager. Requires one AAA battery Dimensions: 55mm x 44mm x 14mm.