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

The HR1688 Quartz Clock Mechanism Movement is designed for precise timekeeping in clocks. It is suitable for various clock repair applications requiring a reliable movement mechanism.

• Model: HR1688
• Material: High-quality nylon gear, nickel-iron stator
• Crystal frequency: 32.768KHz
• Time accuracy: +/-30 seconds per month (at 1.5V DC, 25 degrees Celsius)
• Current consumption: Less than 130μA (at 1.5V DC)
• Operating voltage: 1.3V to 1.7V
• Operating temperature: -10 to 50 degrees Celsius
• Power supply: 1.5V AA batteries (not included)
• Weight: Approximately 25g per unit
• Second hand output torque: ≤ 0.6gf-cm (at 1.5V)
• Minute hand output torque: ≤ 30gf-cm (at 1.5V)
• Pointer specifications: Second hand length/weight ≤ 130mm/2g; Minute hand length/weight ≤ 200mm/6g
• Second hand unbalance torque: ≤ 0.15gf-cm
• Minute hand unbalance torque: ≤ 6gf-cm
• Battery slot: Generally not equipped with a battery cover; includes gold hexagonal plane nut, gold washer, black rubber pad