IBT8-C / IBT8 Wireless Bike Trainer Snap-Fit Locking System With the whole new locking and releasing system, your bike could be clamped and released with simply pressing one lever. Quick: No tools needed, just clamped your bike on drive side and push the tension knob on the non drive side to fix it. Precise: You can micro-adjust your bike position on the center of the controller precisely. Safe: It's equipped with locking mechanism to stable your bike. Sophisticated 24 resistance levels Advanced control system allows you to adjust the resistance levels up to 24 levels, it's definitely the most precise control system in the market. IBT8 bike trainer is smart magnetic resistance system driven by servo motor controller that could product high power output. IBT8 Adjustable support system You can just easily adjust the height of the resistance unit by just tightening or loosing the tension knob to make sure the tire perfectly contacting the roller. Additionally, the lock ring makes your bike more stable on the trainer. Virtual coaching with APP With Pafers-tech cycle training system, IBT8 and IBT8 Wireless offer many training apps for exciting and technically sophisticated virtual coaching. You can train with your iPhone, iPad or Android devices and get detailed training data storage in your own account. IBT8 Wireless: no cable is needed IBT8 IBT8 : control and data display all in handlebar-mounted console. Stable frame design Durable material applied Large flywheel Smart folding system 32 mm diameter gel roller Adapts to all wheels from 24" to 28"