2 PCS HR1688 Quartz Clock Mechanism Movement,Spec: 28mm/ 20.5mm

HR1688 Quartz Clock Mechanism Movement is designed for DIY clock projects. It provides precise timekeeping and low noise operation.

• Product type: DIY Clocks
• Compatibility: HR1688 Quartz Clock Mechanism
• Material: Nylon
• Key feature: Low noise and long service life
• Intended use: Everyday use
• Movement gear made of high-quality nylon
• HR1688 movement with electronic coil
• High-quality bright copper lacquer wire winding
• Stator piece made of nickel-iron materials
• High magnetic permeability and low resistivity
• Crystal frequency: 32.768KHz
• Time accuracy: +/-30Sec/Month (1.5V DC, 25 degrees Celsius)
• Current consumption: Less than 130μA (1.5V DC)
• Operating voltage: 1.3V to 1.7V
• Operating temperature: -10 to 50 degrees Celsius
• Power supply: 1.5V AA batteries (batteries not included)
• Weight: approximately 25g/PC
• Second hand output torque: less than or equal to 0.6gf-cm (1.5V)
• Minute hand output torque: less than or equal to 30gf-cm (1.5V)
• Second hand length/weight: less than or equal to 130mm, less than or equal to 2g
• Minute hand length/weight: less than or equal to 200mm, less than or equal to 6g
• Second hand unbalance torque: less than or equal to 0.15gf-cm
• Minute hand unbalance torque: less than or equal to 6gf-cm
• Movement battery slot generally not equipped with a battery cover
• Includes gold hexagonal plane nut, gold washer, black rubber pad