Features 1.Two calendar clock. Reset output and input. 2.Low power consumption. 3.Provide continuous timing battery backup. 4.The device compatible with encapsulation and function. 5.Complete the clock calendar function including the second, minute, time, week, date, month, and year, and provide the valid until 2100 leap year. Specification Description: For Raspberry Pi is high precision clock module. It can also be used on motherboard. The module itself can be adapted to 3.3 V and 5 V system and no level conversion needed, which is super convenient. Features: Two calendar clock. Reset output and input. Low power consumption. Provide continuous timing battery backup. The device is compatible with encapsulation and function. Complete the clock calendar function including the second, minute, time, week, date, month, and year, and provide the valid until 2100 leap year. Specification: Color: As the pictures show Temperature Range: -40℃ to +85℃ Timing accuracy is maintained: ± 5ppm (± 0.432 sec/day) Output Frequency: 1Hz and 32.768kHz Supply Voltage: +2.3V to +5.5V Digital Temperature Sensor Accuracy: ± 3 ° C Size: 1.4 x 1.3 x 1.3cm / 0.55 x 0.51 x 0.51inch Package Weight: 3g Quantity: 1pc Package included: 1 x Clock Module For Raspberry Pi Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List