The Bowflex SelectTech 840 consolidates six kettlebells into a single compact unit that maintains a consistent footprint regardless of weight selection. Shredded Dad found the dial adjustment system seamless, allowing rapid changes between sets with tactile confirmation for efficient circuit training. However, Men's Fitness noted the handle lacks an ergonomic groove for resting against the forearm during overhead presses or rack positions. The polycarbonate construction carries an explicit 'Do Not Drop' warning because impact can damage the internal locking mechanism, and CNET reported that JRNY app access is limited to tablets and smartphones without TV support.
- — Replaces six individual kettlebells (8 to 40 lbs) in a single compact unit, saving significant floor space.
- — Features an easy-to-use dial adjustment system that allows for rapid weight changes between sets with a tactile click confirmation.
- — Maintains a consistent overall shape and footprint regardless of the selected weight setting.
- — Constructed primarily from polycarbonate plastic rather than solid metal, carrying an explicit 'Do Not Drop' warning on the dial.
- — The handle is welded to the base and lacks a sculpted ergonomic groove for resting against the forearm during overhead presses or rack positions.
- — Weight increments are non-linear (8, 12, 20, 25, 35, 40 lbs), which may not suit users seeking consistent step-ups.