and high quality. -WATCH-2020 adds PDM microphone function on the basis of -WATCH-2020's hardware function, which makes the product function richer and more interesting. Equipped with MAX98357 I2S speaker, to the cloud, it can be used for intelligent voice control. -WATCH-2020 is based on the design concept of programmable, wearable, networkable and interactive. Integrating ESP32 and WIFI it is easy to program and develop, and it is more convenient to to the Internet. The 2D IPS 1.54-inch capacitive for touch screen for watches adopts OCA process and zinc alloy metal frame, which makes the device structure more solid and beautiful. Suitable for wearable use, sensitive capacitive for touch. Main Chip:ESP32 1.54 inch LCD Capacitive for Touch PMU Power Managament:AXP202 for Touch Screen Chip:FT6236U Triaxial Accelerometer:BMA423 Lithium Battery350MA Clock Module:8563 Features: Speaker PDM Microphone Due to different product batches,the appearance ,which does not affect the use. Colour:As Shown Material:Aluminum alloy + Plastic + Silicone Size: 272x47.45mm/10.7x1.86in Package Contents: 1 * -Watch-2020 1 * USB Charging Cable 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.