T-Watch 2020 V3 LCD / OLED it cannot be partially refreshed

it cannot be partially refreshed for a long time

if you just want to count them

Bluetooth 5 (LE) Flash 16MB PSRAM 8MB Development Arduino、PlatformI0-IDE、ESP-IDF  Buzzer+TF Card Function

T-WATCH-2020 document

Flip to plug into USB Wireless 1

T-Watch 2020 V3 LCD / OLED it cannot be partially refreshedThe T watch 2020 v3 is an open source smartwatch that is highly customizable and can be used for a variety of applications. Specifications Host parameters ESP32 D0WDQ6 V3 Chip WiFi Bluetooth FLASH 16MB SRAM 520 kB SRAM PSRAM 8MB Custom function power button (6S off) ( 2S on) OCA process of 1. 54 inch IPS 2D arc capacitive touch screen Step algorithm function of BMA423 three axis accelerometer AXP202 PMU PCF853 RTC chip MAX98357 I2S amplifier chip 8 @