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💥 Grip like a boss — measure, train, and dominate every squeeze!
The JTHEW Grip Strength Tester Trainer is a dual-function electronic hand dynamometer and adjustable resistance grip trainer. It accurately measures grip strength up to 400lbs using a high-precision strain gauge sensor and offers customizable resistance from 11 to 132lbs. Featuring ergonomic handles and smart tracking for up to 19 users, it delivers scientific, comfortable, and data-driven grip training ideal for athletes and fitness enthusiasts.







| Asin | B0DJSPV6DQ |
| Best Sellers Rank | #5,739 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #32 in Strength Training Grip Strengtheners |
| Brand Name | JTHEW |
| Color | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (689) 4.5 out of 5 stars |
| Item Dimensions L X W | 7.67"L x 5.1"W |
| Item Shape | Round |
| Item Weight | 1.5 pounds |
| Manufacturer | JTHEW |
| Material | Plastic, Stainless Steel |
| Model Number | GST001 |
| Part Number | GST001 |
| Style | Adult |
| Tension Supported | Extra-Heavy |
User
Very Useful for Grip Strength
Well made, highly useful hand grip dynamometer promptly delivered. For those whose hand strength might be in question, this device can quantify present strength and also provides a grip building unit to increase grip power should it be below what it should be.
User
Good
This is a quality tester and I like how it is adjustable. The setup is easy, it comes with batteries, and is accurate. The exerciser thing is pretty cool too.
User
Very Happy!!!
Seems to work fine. Decent quality. I like the adjustable grip! Would recommend
User
Decent
Not as comfortable as I thought but does the job so far
User
Family fun!
Works well
User
Great product
We love it!
User
The grip sucks but it works
The grip on them is terrible
User
Gym-Grade Precision at Home!
As a casual weightlifter and dad of two rowdy kids, I never thought I’d geek out over a grip strength tester—until the dynamometer turned my garage gym into a legit training lab. I bought this on a whim during Prime Day, skeptical it’d survive my chaotic household. Six months later? It’s survived juice spills, toddler tantrums, and my obsessive data tracking—and still works like Day 1. Here’s why this gadget became my fitness secret weapon.First Impressions: Built Like a Nokia PhoneWhen the box arrived, my kids tried commandeering it for a “sci-fi robot arm.” But the moment I gripped the industrial aluminum handle (swaddled in sweat-proof rubber), they knew this wasn’t a toy. The LCD screen lit up like a mini Times Square billboard—0.0 lbs staring back, daring me to squeeze. Setup took 10 seconds: Pop in the included AAA batteries, adjust the grip width (I’m 6’1” with bear paws—3.5” setting fit perfectly), and crush away.First test: 68 lbs right hand, 61 lbs left. My 9-year-old yelled, “Dad, you’re weaker than Mom!” (Wife hit 72 lbs. Cue midlife crisis.)Real-World Wins: From Dad Bod to Deadlift God1. Gym BreakthroughsI’d plateaued at 315-lb deadlifts for months. The dynamometer exposed my grip as the weak link—I could only sustain 55 lbs for 10 seconds. After 8 weeks of grip-specific training (tracked daily), I hit 85 lbs grip strength and finally pulled 365 lbs. My gym buddy bought one immediately.2. Parenting HacksTurned grip tests into a game: Kids earn screen time by beating their last score (their tiny hands use the 1.6” narrow setting).Discovered my son’s baseball throw accuracy correlates with left-hand grip strength—coach now uses our data for drills.Why It Beats Cheap AlternativesTested a $29 Amazon “fitness grip tester” for comparison:Plastic vs. Tank: Competitor cracked when I sneezed mid-squeeze (yes, really).Guesswork vs. Precision: Cheaper model fluctuated ±15% between tests; this stays within 2%.One-Size-Fiasco: The budget option’s fixed grip strained my wife’s smaller hands—no adjustability.Unexpected Life UpgradesBBQ Cred: Friends now demand grip showdowns instead of cornhole. Prize: Last slice of brisket.Workplace Clout: Brought it to the office—HR uses it for “wellness challenges.” My 92-lb score is office lore.Final VerdictFor under $80, this gadget delivered:Avoider’s cure for $120/month gym fees (home grip training = 3x weekly sessions)Marriage therapy via grip rivalries (spousal PRs > couples’ yoga)Proof that dads can still out-grip teens (until mine hit puberty)If you want to turn “I think I’m getting stronger” into cold, hard data—or just shut up your cocky kid—this dynamometer’s your MVP. Now excuse me while I go reclaim my title from the Mrs…
User
De momento bien
el producto está en buenas condiciones ha llegado precintado ,parece sólido y marca con fiabilidad. Trae un entrenador de fuerza
User
Satisfait
Bon rapport qualité prix...
User
JTHEW Grip Strength Trainer
Well made, easy to use - does what it is supposed to do. Has a nice case to contain both pieces.
User
Good Device ... but i am to weak 😂😐😭
seems to be a good one ... but i could cry when Seeing the YouTube Videos where the Guys make 109kg and more ... how ??? damn 😂😂😂
User
⭐️⭐️⭐️⭐️⭐️ very good and sturdy
Really happy with this. It feels sturdy and well made, and the grip is comfortable even during longer sessions. I like that you can adjust the resistance, so it’s easy to increase the difficulty as you get stronger. It’s small enough to use anywhere too. Definitely a great little tool for improving grip strength.
Trustpilot
5 days ago
3 days ago