Lithium battery rechargeable: With intelligent charging management chip (it is recommended to fully charge the first time, and the charging process is also the process of automatic calibration of the product. Data fluctuations are normal) Ultra-long battery life: Laboratory tests show that 150mA lithium batteries can work continuously for more than 6 months; Temperature and humidity calibration: It has been integrated into the software algorithm, and users do not need to perform secondary operations, which is simple and convenient This product is designed with all domestic electronic components. The main control MCU and sensor support ultra-low power consumption. In addition, a three- acceleration sensor is added for vibration detection to achieve screen sleep or wake-up, further effectively reducing product power consumption High : Temperature Sensor ±0.3℃ Working Range: -40~125℃. Humidity Sensor ±2% Working Range: 0% ~100%, Weight: 0.0440924524 pounds, Manufacturer: Gishbjka