Features: brand new and high quality T-WATCH-2020 V3 adds PDM microphone function on the basis of T-WATCH-2020's hardware function, which makes the product function richer and more interesting. Equipped with MAX98357 I2S speaker, connected to the cloud, it can be used for intelligent voice control. T-WATCH-2020 is based on the design concept of programmable, wearable, networkable and interactive. Integrating ESP32 and WIFI/Bluetooth, it is easy to program and develop, and it is more convenient to connect 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 screen, man-machine interaction is smoother. Specifications: Main Chip:ESP32 1.54 inch LCD Capacitive for Touch Screen:ST778V PMU Power Managament:AXP202 for Touch Screen Chip: FT6236U Triaxial Accelerometer:BMA423 Lithium Battery：350MA RTC Clock Module: PCF 8563 Features: Speaker; Infrared Signal Sensor PDM Microphone Material: Silicone+Metal Color:Silver/Gun Size:approx 272x47.45mm/10.7x1.86in Package Includes: 1 X T-Watch-2020 1 X Micro USB Charging Cable note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.