These stopwatches are water resistant.

Keep your phone in your pocket and your hands free—these smartwatches perform a variety of functions on your wrist. They connect to Apple and Android phones via Bluetooth, informing you when calls, texts, and other notifications arrive. Designed for harsh environments and rugged use, they meet military standards for resistance to hot and cold temperatures, shock, splashes, and submersion in up to 100 meters of water. These watches have a compass and GPS for tasks such as navigation, tracking and saving location coordinates, and calculating the area of a location by walking the perimeter. With weather and elevation monitoring, you can set the rate of barometric pressure change that will trigger a storm alert. These watches track health and fitness metrics over time, including heartrate, blood oxygen levels, and exercise. They have a solar battery in addition to a rechargeable lithium-ion one to extend the time between plug-in charging.

Attach these timers to faucets to make sure you’re following handwashing protocols that help prevent the spread of illness. Most health organizations recommend washing your hands for at least 20 seconds to eliminate germs. These timers have a 30-second countdown, which is enough time to pump soap, wash for 20 seconds, and rinse your hands. An easy-to-read LCD display shows you the amount of time you have left. They also beep to alert you when the countdown is done, so you don’t have to watch the timer.

These timers are touch-free—a sensor triggers the countdown as soon as water starts flowing, and they automatically reset after 30 seconds. The countdown continues even if the flow of water stops, so you can install them on both manual and touch-free sinks. Connect timers directly to a male-threaded faucet, or use the male adapter to connect to a female-threaded faucet. They include a wrench, so you don’t need tools on hand to install them.

Made from impact-resistant ABS, these timers hold up to bumps and scrapes from regular use. The chrome finish blends in with silver faucets. An aerator at the base of the timer prevents splashes and helps create a smooth flow of water. They also have a rubber gasket to keep water from leaking through the faucet connection.