In this video I tested the Merach S29 self-powered exercise bike to see if it’s actually one of the best budget exercise bikes you can buy. I break it down into the full unboxing, a step-by-step build, a ride test, and then my final thoughts. Out of the box you get the main frame pieces, seat post, pedals, control panel, manual, and the tools/hardware, and everything was packed together in a big styrofoam cube. Assembly was straightforward: front/back stabilizers, pedals, seat/seat post, then the handlebar post, handlebars, control panel, and water bottle holder. Once it was built, I went through the comfort and adjustability—seat forward/back, seat height, handlebars forward/back and height—plus the extras like the dumbbell holder, cycling shoe cages, and the double water bottle holder (my Hydro Flask fit perfectly). The big highlight is the resistance range: 16 levels, and in my ride test level 1 was basically effortless, 5 felt like a real workout, 10 was tough, and 16 was extreme to the point where I could barely move the pedals. I also show the LED display metrics and how it can connect to apps like Merach’s app and Zwift, including smart auto-resistance that changes with the workout or terrain. Overall, I found it smooth, comfortable, and absolutely worth buying if you want a smart-gym style bike on a budget.