Gymboss Bundle - 2 Items: 1 Interval Timer and Stopwatch + 1 Watch Strap This is a bundle of 2 items - 1 Gymboss Interval Timer and Stopwatch and 1 Gymboss Watch Strap. Gymboss Timer - Compact interval timer times one or two intervals between two seconds and 99 minutes. Built-in Stopwatch and Clock feature. Secure and Removable Belt-clip included. Gymboss Timer - Auto mode keeps repeating through intervals. Chime and vibration interval notification; alarm duration can be set for one, two, five, or nine seconds. Size of a small pager. Powered by one AAA battery (not included); measures 2.25 by 1.75 by 0.5 inches (55mm X 44mm X 14mm). Sweat and impact resistant. Watch Strap - Quick, secure attachment: Wear your Gymboss Timer like a watch. Any Gymboss model with a removable belt clip will snap securely in place on this high quality watch strap. This strap allows the Gymboss's vibrating alarm to be fully transmitted to the user's wrist. Perfect for runners or other users who want to easily monitor time or rounds remaining during activity. Also ideal for coach's or others who regularly use the stopwatch feature of the Gymboss. Watch Strap - High quality, perforated band allows breathability but is also strong and durable. All hardware is black stainless steel.