Twemco BQ-170 Flip Clock (White Case Black Dial) Perpetual Calendar: Automatic re-setting, even for leap years. Cases: Injection molded ABS case with supreme acrylic glass cover Number plate: material and paints from Japan, ever-lasting white Maintenance free Invention patented Dimension: 335 x 380 x 118 mm Weight: 2.5kg Hour Type: 12hr (AM/PM) Height of number plates: 58 mm Height of digits: 40 mm Readability: Over 23 meters Power supply: 2x 1.5V alkaline battery Size D Accuracy: 0.6 sec/month between 20°C to 25°C Operating temperature: -10°C to +50°C 1 Year Local Seller Warranty