Product information: Resolution: None Power: None Measurement object: formaldehyde/carbon dioxide/oxygen/Air overall quality Size: 13 Material: ABS Color: White Battery parameters: 3.7V, 1200mAh (not included) Charging parameters: micro-USB DC5V Charging time: 1 hour Test temperature range:-10℃ to 70℃ Humidity test range: 0-99% RH Reaction Time: <1S