Wahoo Kickr Snap bicycle trainer.  I tried it once, realized it was not for me, but cannot return it.  Selling for $75 less than I paid for it (including tax).  

Attaching pictures from website because item is brand new, but happy to take/send actual photos if you would like.

Product Info:

• Convenient wheel-on design makes it easy to turn your road or mountain bike into a powerful indoor smart-trainer quickly
• Made with high-strength carbon steel and a wide stance, the feet plant firmly on the floor and your bike is securely locked in so you can train with stability and confidence
• SNAP uses an app on your smartphone, tablet or computer to control resistance and provide a reliable power measurement so you can monitor and adjust your intensity as you like
• Both ANT+ and Bluetooth 4.0 (aka Bluetooth Smart) capabilities allow it to connect to smartphones and GPS devices simultaneously or separately
• Compatible with 130mm and 135mm quick-release hubs and 12mm x 142mm thru-axle hubs with adapter
• Adjustable incline simulates climbs up to maximum 12% grade
• High-inertia flywheel is engineered to replicate the feel of riding on the road
• As quiet as your favorite fluid trainer—no shouting required
• Adjustable to fit most bikes; foldable legs for easy transport
• Compatible with iPhone® 4S and newer, iPad (3rd gen and newer), iPad Touch (5th gen and newer), and Android devices
• Supports aftermarket power meters
• LED indicator lights provide visual confirmation that SNAP is powered, connected and transmitting
• Works with popular training software such as TrainerRoad for virtual training
• This Zwift Certified product is compatible with the Zwift online platform so you can track, train and compete in a virtual environment
• Includes a front wheel block