Introducing Version 1.2 with 3 added features...

1. Color changing screen
2. Embossed magnetic base
3. Improved UI

The Terp Timer is a desktop wireless thermal sensor that allows you to dial in the exact temperature when concentrating...

Set your desired temp and the unit will beep to remind you when it hits that temperature.

The battery lasts for 2-3 months per charge.  10-year warranty.