Onboard high-precision RTC chip for accurate time control. Optimized PCB layout with additional mounting holes for fixing screws. Adopts Immersion Gold process, and anti-, enhances soldering performance and improves electrical properties, with better durability and reliability to meet applications. Adopts for HAT+ standard to improve interoperability, helping the users to design and develop faster, easy to use with other peripherals and extend more functions for . No backlight, keeps displaying last content for a long time even when power down. OPERATING VOLTAGE:3.3V GREY SCALE:2 INTERFACE:3-wire SPI, 4-wire SPI FULL REFRESH TIME:2s OUTLINE DIMENSIONS:65 x 30.5mm PARTIAL REFRESH TIME:0.3s DISPLAY SIZE:48.55 x 23.70mm FAST REFRESH TIME:1.8s DOT PITCH:0.194 x 0.194mm REFRESH POWER:10.5mW (typ.) RESOLUTION:250 x 122 pixels STANDBY POWER:Less than 0.01mW(typ.) DISPLAY COLOR:black, white VIEWING ANGLE: 170° Note:due to different production batches, the appearance printing is different, which does not affect the use. Colour:As Shown Material:Plastic Package Contents: 1 * Module 8 * Nail Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.