1、Mechanically operated timer does not require batteries. 2、This timer is great for use in salons, offices, labs, schools or in the kitchen. 3、Enjoys a loud ring, which can easily be heard from across the room. 4、Made from premium material, anti-rust and durable. 5、Easy to set. Simply turn the dial to desired time. Features: Mechanically operated timer does not require batteries. This timer is great for use in salons, offices, labs, schools or in the kitchen. Enjoys a loud ring, which can easily be heard from across the room. Made from premium material, anti-rust and durable. Easy to set. Simply turn the dial to desired time. Operation Methods First, turn dial clockwise to zero graduation.Then turn it back to the number of minutes you want counterclockwise.When the time is up, it will ring automatically. Specification: Condition: 100% Brand new Material: Metal Color: as shows in pictures Size: Approx.7*7* 8.3cm / 2.76* 2.76* 3.27in Gross Weight: Approx.100kg Package List: 1* Kitchen Timer   Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.