Spectrum Electronics TB2I-Y StormPro2 Handheld Lightning Detector with Intelicharge and 1255-BLACK Custom Case Tracks dangerous thunderstorm activity from over 130 miles. Large backlit LCD display with multiple storm status updates including: Storm Distance, ETA and Time to Clear, etc. Automatically displays in both Miles and Kilometers. Visual and Audible storm warning alerts. Rechargeable on any current and plug configuration in the world.