Features: Easy to install and convenient to use. 1x AA battery is required (not included). Replacement for old or damaged clock movement. Made of high-quality material for durability and long service life. Overall shaft length: 14.5mm, thread height: 7mm, suitable for panels up to 4mm thick. Package Includes: 1x Clock Movement Specifications: Material: ABS Size: Approx. 56 x 56.7 x 16 mm / 2.20 x 2.23 x 0.63 in Use voltage: 1.3V to 1.7V Time accuracy: ±25 seconds per month (at 1.5V DC, 25°C) Current consumption: Less than 150μA (at 1.5V DC) Operating temperature: -10°C to 60°C Battery life: Approximately one year (with UM-3 battery) Weight: Approx. 25g per piece Second hand output torque: 0.6gf-cm (at 1.5V) Minute hand output torque: 30gf-cm (at 1.5V) Hand specifications: Second hand: Length/weight: 130mm / 2g, unbalanced moment: 0.15gf-cm Minute hand: Length/weight: 160mm / 6g, unbalanced moment: 6gf-cm Note: 1x AA battery is required (not included). Please allow 1-2cm measurement deviation due to manual measurement. The actual color may vary slightly due to monitor display differences.