The Luna G3 Machine by 3B has a clear LCD screen so you can easily access the snapshot of your previous night's data and a universal power supply so you can use it anywhere in the world. The embedded memory will store the previous night's full raw data AND 365 nights of usage data ...The Luna G3 Machine by 3B has a clear LCD screen so you can easily access the snapshot of your previous night's data and a universal power supply so you can use it anywhere in the world. The embedded memory will store the previous night's full raw data AND 365 nights of usage data for up to 30 years! Plus, the G3 series has a pre-heat feature to warm your humidifier water up for ultimate comfort.