--- product_id: 160457045 title: "BowFlex SelectTech 840 Adjustable Kettlebell" brand: "bowflex" price: "NT$14449" currency: TWD in_stock: true reviews_count: 13 category: "Bowflex" url: https://www.desertcart.tw/products/160457045-bowflex-selecttech-840-adjustable-kettlebell store_origin: TW region: Taiwan --- # 2-month JRNY app trial Replaces 6 kettlebells Adjustable 8-40 lbs dial BowFlex SelectTech 840 Adjustable Kettlebell **Brand:** bowflex **Price:** NT$14449 **Availability:** ✅ In Stock ## Summary > 🔥 Dial in your fitness, dial out the clutter! ⚙️ ## Quick Answers - **What is this?** BowFlex SelectTech 840 Adjustable Kettlebell by bowflex - **How much does it cost?** NT$14449 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/160457045-bowflex-selecttech-840-adjustable-kettlebell) ## Best For - bowflex enthusiasts ## Why This Product - Trusted bowflex brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dial Up Your Power:** Seamlessly switch weights from 8 to 40 lbs with a simple turn—no interruptions, just gains. - • **Space-Smart Strength:** Replace six bulky kettlebells with one sleek, compact design that fits anywhere. - • **Built to Last & Perform:** Ergonomic handle and solid composite build ensure stability and comfort for every rep. - • **Train Anywhere, Anytime:** Unlock 2 months free JRNY membership for adaptive workouts on your phone or tablet. - • **Total-Body Transformation:** Perfect for swings, rows, squats, and twists—build muscle and burn fat in one device. ## Overview The Bowflex SelectTech 840 Adjustable Kettlebell offers a versatile 8 to 40 lbs weight range with a quick-turn dial, replacing six kettlebells in one space-saving design. Paired with a 2-month free trial of the JRNY mobile app, it delivers adaptive, trainer-led workouts for strength and cardio at home or on the go. Engineered with an ergonomic handle and durable composite materials, it’s perfect for professional millennials seeking efficient, effective full-body training without the gym hassle. ## Description Swing into action with the Bowflex SelectTech 840 Kettlebell, the adjustable kettlebell that provides 6 different weights in one compact design! Save space by selecting the weight you want with the turn of a dial, allowing you to achieve total-body results from the comfort of home. Our JRNY Mobile-Only Membership with Motion Tracking is ideal for strength training at home or on the go; try it free for 2 months from your phone or tablet. With the 840 Kettlebell, you'll combine cardio and strength in one quick, effective workout, helping you build muscle, burn fat, and boost confidence. *JRNY subscription required. This offer’s availability is subject to change without notice. At end of free trial, JRNY membership automatically renews at membership rates until canceled. Review: Perfect kettlebell for anyone, especially seniors! - Outstanding! We love this device. Makes working out easy, but with great results. 6 weeks in and both my wife and I love it. 2x daily workouts for each of us without leaving the bedroom! The adjustable weight function is a great idea. Solid construction. The weights hold on well. We had to leave the house for a week to watch grandchildren out of state and took it with us to maintain our work out schedule. We both feel a stronger core, glutes and thighs, as well as biceps - I’m seeing definition I have not seen in years. Don’t hesitate to- get this and get off your butt and start getting a life back. This will remove your excuses: affordable, no gym membership or “staring at you” at the gym, and one device that is itself a full set of kettlebells. We are 70+ and love this. Review: Compact, sturdy, and super convenient - This adjustable kettlebell has been one of the best things I've added to my home gym. The weight changes happen quickly and smoothly, and each setting feels stable with no wobbling or moving. The handle is easy to hold and has enough room for exercises that can be done with one or two hands. It takes up a lot less space than having a lot of kettlebells, but it still feels just as strong when you swing, row, squat, or press. This is a great piece of equipment for anyone who wants to be able to do a lot of different things without having to buy a lot of equipment. ## Features - TURN OF A DIAL: With the turn of a dial, you can easily adjust from 8 to 40 lbs., rapidly switch from one exercise to the next, and perform a wide variety of full-body exercises. - SPACE EFFICIENT: Replaces up to 6 kettlebell with weights at 8, 12, 20, 25, 35, and 40 lbs. - 2-MONTH FREE TRIAL: Try our JRNY All-Access Membership for 2 months, free. - JRNY MOBILE-ONLY MEMBERSHIP: Workout at home or on the go with inspiring trainers, and just-for-you adaptive workouts, from your phone or tablet. - WIDE WEIGHT RANGE: Offers a variety of workouts, including swings, rows, squats, twists and more. - SPACE-SAVING DESIGN: Ensures a quality workout from nearly any room in your home. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07X64MXBS | | Best Sellers Rank | #3,641 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #12 in Strength Training Kettlebells | | Brand | Bowflex | | Brand Name | Bowflex | | Color | Black | | Customer Reviews | 4.8 out of 5 stars 7,630 Reviews | | EU Spare Part Availability Duration | 5 Years | | Global Trade Identification Number | 00708447912961 | | Handle Diameter | 28 millimeters | | Handle Material | Plastic | | Included Components | Kettlebell | | Item Dimensions L x W | 8.82"L x 7.01"W | | Item Type Name | Bowflex SelectTech 840 Kettlebell | | Item Weight | 40 Pounds | | Manufacturer | Johnson Health Tech Trading | | Material | Composite | | Model Number | 100790 | | Number of Items | 1 | | Number of Pieces | 1 | | Other Special Features of the Product | Adjustable, Ergonomic | | Part Number | 100790 | | Product Dimensions | 8.82"L x 7.01"W | | Special Feature | Adjustable, Ergonomic | | Style | Bowflex Kettlebell 8-40lbs | | Target Use Body Part | Shoulder | | UPC | 708447912961 | | Unit Count | 1.0 Count | | Warranty Description | 2 years | ## Product Details - **Brand:** Bowflex - **Color:** Black - **Item Weight:** 40 Pounds - **Material:** Composite - **Product Dimensions:** 8.8"L x 7"W x 12.5"H ## Images ![BowFlex SelectTech 840 Adjustable Kettlebell - Image 1](https://m.media-amazon.com/images/I/61GhgyYpcRL.jpg) ![BowFlex SelectTech 840 Adjustable Kettlebell - Image 2](https://m.media-amazon.com/images/I/71Gz26nOM4L.jpg) ![BowFlex SelectTech 840 Adjustable Kettlebell - Image 3](https://m.media-amazon.com/images/I/71JMWOvcm1L.jpg) ![BowFlex SelectTech 840 Adjustable Kettlebell - Image 4](https://m.media-amazon.com/images/I/71uW-UnVaqL.jpg) ![BowFlex SelectTech 840 Adjustable Kettlebell - Image 5](https://m.media-amazon.com/images/I/71nIj9KA24L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect kettlebell for anyone, especially seniors! *by R***S on March 7, 2026* Outstanding! We love this device. Makes working out easy, but with great results. 6 weeks in and both my wife and I love it. 2x daily workouts for each of us without leaving the bedroom! The adjustable weight function is a great idea. Solid construction. The weights hold on well. We had to leave the house for a week to watch grandchildren out of state and took it with us to maintain our work out schedule. We both feel a stronger core, glutes and thighs, as well as biceps - I’m seeing definition I have not seen in years. Don’t hesitate to- get this and get off your butt and start getting a life back. This will remove your excuses: affordable, no gym membership or “staring at you” at the gym, and one device that is itself a full set of kettlebells. We are 70+ and love this. ### ⭐⭐⭐⭐⭐ Compact, sturdy, and super convenient *by A***M on November 19, 2025* This adjustable kettlebell has been one of the best things I've added to my home gym. The weight changes happen quickly and smoothly, and each setting feels stable with no wobbling or moving. The handle is easy to hold and has enough room for exercises that can be done with one or two hands. It takes up a lot less space than having a lot of kettlebells, but it still feels just as strong when you swing, row, squat, or press. This is a great piece of equipment for anyone who wants to be able to do a lot of different things without having to buy a lot of equipment. ### ⭐⭐⭐⭐⭐ Excellent *by V***7 on April 30, 2026* This very much exceeded my expectations and I am very pleased. High quality, well made, and easy to switch the different weight settings. Perfect for home use., takes up very little space. I highly recommend. ## Frequently Bought Together - BowFlex SelectTech 840 Adjustable Kettlebell - Bowflex SelectTech 552 Adjustable Dumbbells - ProsourceFit Puzzle Exercise Mat ½ in, EVA Interlocking Foam Floor Tiles for Home Gym, Mat for Home Workout Equipment, Floor Padding for Kids, Cream, 24 in x 24 in x ½ in, 24 Sq Ft - 6 Tiles --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tw/products/160457045-bowflex-selecttech-840-adjustable-kettlebell](https://www.desertcart.tw/products/160457045-bowflex-selecttech-840-adjustable-kettlebell) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-05-18*