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. Wide Applications: The RTC clock module has two calendar clock. It can reset output and input. It will meet your need and bring a better experience. Low Power Consumption: The RTC clock module has the characteristic of low power consumption, with 1 Hz and 32.768 kHz output. Battery Backup: The RTC clock accessory can provide continuous timing battery backup. Multifunction: The block module has multi-function.The device compatible with encapsulation and function. Complete Calendar: Complete the clock calendar function about digital clock including the second, minute, time, week, date, month, and year, and provide the valid until 2100 leap year.