The screen uses E Ink Spectra 6 (E6) technology, supports high-contrast, high-saturation color display effects, and uses six primary colors using dithering technology to produce full-color images The overall power consumption is very low, and basically only consumes power when refreshing The large-capacity lithium battery is equipped with a power-saving circuit, and it can be refreshed thousands of times on a single charge Onboard RTC chip for timed refresh Simple solid wood photo frame, elegant and beautiful, rotating bracket and hook, unlimited usage scenarios, open source code, free customization function<br><br>Hign-concerned Chemical;None Brand Name:Waveshare Size:7.3inch Resolution:800x480 Viewing Angle: Greater than 170 Display Color:E6 Full Color Power Consumption:Ultra-low Display Duration:Persists without Power Colour:As Shown Material:Wood<br><br>Package Contents: 1 * photo Frame<br><br>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.