Brand Name: NONE High-concerned chemical: None Origin: Mainland China Battery Included: Yes Power (W): 2 W Is Smart Device: No Model Number: ST-3 Battery Included: Yes High-concerned chemical: None Is Smart Device: No Voltage: 1.5V Model Number: ST-3 Origin: Mainland China Power (W): 2 W Thermometer Error Range: ±1°C Choice: yes