This easy-to-use portable timer can alert you through your choice of vibration, flashing LED light, and/or sound. Perfect for deaf hard of hearing people! This compact timer gives you 3 modes of alerts with any combination of vibration, flashing LED light or audible sound to let you know when time is up. Great for deaf hard of hearing people, or for use by anyone in loud environments where hearing the buzzer of a timer might otherwise be difficult. Setting the time is fast easy! Features: Counts up (stopwatch mode) or down (timer mode) Automatic memory recalls last timer setting Easily change settings from h:m (hours:minutes) and m:s (minutes:seconds) Dimensions: 3" x 1.75" x 1.75" Includes built-in stand, opening for lanyard, magnet back, AAA battery and accuracy certificate Easy to read display NOTE: this item does not have a clock function Feature Details Brand General Tools Mfg part # TI150 Warranty One year Color Grey / Silver Weight (lbs) 0.15 Battery operated? Yes (batteries required) Batteries included? Yes Battery details (2) AAA batteries Country of Manufacture China Alert Type(s) Vibration Flashing Light Loud Audible Yes Yes Yes Bluetooth No Smartphone Compatibility iOS Android No No # of Alarms 1