This is a professional chess competition timer with three operation modes, designed for multiple game rules. It supports step counting, countdown, and count-up functions. The device is easy to operate, allowing quick selection and setup of game rules with one-button start. It features memory functionality, enabling repeated use after initial setup. An adjustable alarm sound is included. Suitable for Chinese Chess, International Chess, and Go. Features: - Three operation modes for versatile use - Step counting, countdown, and count-up functions - Simple operation with quick rule selection and one-button start - Memory function for repeated use after initial setup - Adjustable alarm sound Specifications: - Name: Chess Competition Timer - Model: YS-902 - Material: ABS - Color: Black, Yellow (optional) - Power: 2 × AAA batteries (not included) - Screen size: 103 × 23 mm (4.06 × 0.91 in) - Item size: 140 × 88 × 45 mm (5.51 × 3.46 × 1.77 in) - Item weight: 105 g (3.70 oz) - Package size: 150 × 100 × 50 mm (5.91 × 3.94 × 1.97 in) - Package weight: 157 g (5.54 oz) Package includes: 1 × Chess Clock