Specification: Item Type: Mechanical Timer Material: Plastic ABS Working Mode: Mechanical Maximum Time Setting: 60 minutes Time Error: +/- 1 minute Weight: Approx. 100g / 3.5oz Instructions: Step 1. Rotate the timer CW once until the 55 digit position, which will help to set the alarm. Step 2. Rotate the timer CCW until the desired time is reached. Step 3. You will hear a ticking sound. This means your timer is on. Step 4. When the time is over, the timer will trigger an alarm to remind you. Size: Approx. 5.2cm / 2in 16cm / 6.3in 3.5cm / 1.4in Package List: 1 x Timer 1 x User Manual Note: 1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.