Ekrin B37 vs Bowflex SelectTech 840 Kettlebell: Which Recovery Tool Wins?
By Isaac · · 6 min
Disclosure: This comparison contains Amazon affiliate links. If you buy through them, The Isaac Standard may earn a small commission at no extra cost to you. This never affects the verdict.
The Ekrin B37 percussion massager is the clear winner for anyone focused on muscle recovery, offering superior power, quiet operation, and build quality. The Bowflex SelectTech 840 Kettlebell is a clever space-saving strength tool, but its bulky design and high price make it a niche choice for beginners or those with limited space.
This comparison is for fitness enthusiasts who are deciding between a percussion massager for recovery and an adjustable kettlebell for strength training. If you\'re torn between these two very different tools, we\'ll help you understand which one better fits your primary fitness goals.
The Ekrin B37 is a high-end massage gun designed for deep tissue relief, while the Bowflex SelectTech 840 is an adjustable kettlebell that replaces six weights. We\'ll compare their specs, real-world performance, and value to help you make an informed choice.
Head to head
| Metric | Ekrin B37 Percussion Massager | Bowflex SelectTech 840 Kettlebell |
|---|---|---|
| Primary function | Percussion massage for muscle recovery | Adjustable kettlebell for strength training |
| Weight | 2.4 lbs (device) | Adjustable from 8 to 40 lbs |
| Stall force / weight settings | 56 lbs stall force | 6 settings: 8, 12, 20, 25, 35, 40 lbs |
| Battery life | 6–8 hours | N/A (manual equipment) |
| Noise level | Quieter than Theragun Pro | Silent (no motor) |
| Portability | Heavy at 2.4 lbs, no carry case included | Bulky, not travel-friendly |
| Included accessories | 4 attachments (ball, flat, bullet, fork) | None (single unit) |
| Durability | Premium aluminum build | Plastic housing, not drop-safe |
Performance and Use Case
The Ekrin B37 excels in its role as a recovery tool. With 56 lbs of stall force and a speed range of 1,400–3,200 RPM, it powers through tight muscles effectively. It\'s also notably quieter than the Theragun Pro, making it suitable for shared spaces. However, its 2.4-lb weight can be tiring for self-treatment, especially on hard-to-reach areas.
The Bowflex SelectTech 840 Kettlebell offers quick weight changes via a dial, which is great for circuit training. But its bulky design and high center of gravity make advanced moves like snatches feel awkward. It\'s not drop-safe, so you can\'t use it for high-intensity ballistic exercises without risking damage.
Value and Convenience
The Ekrin B37 is priced as a premium massager, but it delivers professional-grade power and quietness. The lack of a carry case and limited attachments are drawbacks, but the core performance justifies the cost for serious athletes.
The Bowflex SelectTech 840 costs around $300, which is a premium for an adjustable kettlebell. It saves space by replacing six kettlebells, but the weight distribution and plastic housing compromise its feel and durability. For beginners with limited space, it\'s a convenient option, but purists may prefer a traditional cast-iron bell.
Who Should Choose Which
If your primary goal is muscle recovery and you want a powerful, quiet massage gun, the Ekrin B37 is the clear winner. It\'s ideal for athletes and gym-goers who need deep tissue relief and don\'t mind the extra weight.
If you\'re looking to build strength at home with minimal equipment, the Bowflex SelectTech 840 is a space-saving choice. It\'s best for beginners or those who prioritize convenience over authentic kettlebell feel. However, if you\'re an experienced lifter, you may find its bulk frustrating.
Which should you buy?
Buy the Ekrin B37 Percussion Massager if: Buy the Ekrin B37 if you need a powerful, quiet percussion massager for muscle recovery and prioritize performance over portability.
Buy the Bowflex SelectTech 840 Kettlebell if: Buy the Bowflex SelectTech 840 Kettlebell if you want a space-saving adjustable kettlebell for strength training and are a beginner or have limited space.
The verdict
The Ekrin B37 is the more universally useful tool, offering excellent recovery benefits with high stall force and quiet operation. The Bowflex SelectTech 840 is a clever concept but has significant compromises in feel and durability. If you can only buy one, the Ekrin B37 is the better investment for most fitness enthusiasts.
Full reviews: Ekrin B37 Percussion Massager · Bowflex SelectTech 840 Kettlebell
Frequently asked
Can I use the Ekrin B37 on my neck?
Yes, but use the flat head at low speed and avoid direct pressure on the spine. At 56 lbs of stall force, the B37 can be intense on sensitive areas.
Is the Bowflex SelectTech 840 kettlebell safe to drop?
No, the plastic housing can crack if dropped repeatedly. Unlike traditional kettlebells, it's not designed for high-impact drops.
Which product is better for a small home gym?
The Bowflex SelectTech 840 saves space by replacing six kettlebells, but the Ekrin B37 is compact and easy to store. If you already have weights, the B37 is a great recovery addition.