FLYBIRD DB2 Quick Adjustable Dumbbell, 55 lb, Set of 2 vs NÜOBELL 580 Adjustable Dumbbells, 5-80 lb Pair
These are side-by-side facts taken from each product guide: published specifications, strengths and caveats as their sources state them. This page is not a test, a ranking or a verdict about which model is better.
FLYBIRD DB2 Quick Adjustable Dumbbell, 55 lb, Set of 2
Big weight jumps rather than small progressive steps
A pair of dial-adjusted dumbbells with just five settings, 15 to 55 pounds in 10 pound steps, and a tray each. The dial must only be turned while the dumbbell sits in its tray, and you listen for a click and check the handle alignment before lifting. One year of warranty, shipped in two boxes.
Published specifications
- Maker page: five settings, 15, 25, 35, 45 and 55 lb, 10 lb steps
- Maker page: 19 in L x 8.5 in W x 8 in H per dumbbell; 1 in handle
- Maker page: 8 plates total, about 7.7 in plate diameter, rotating dial
- Manual: do not turn the dial when the dumbbell is out of the tray
- Manual: listen for the click and align the handle with the scale mark before lifting
- Maker page: one-year warranty, 30-day money-back guarantee
Strengths
- One-handed dial change with a tray included for each dumbbell
- Maker publishes plate count, plate diameter and exact dimensions
- Thirty-day money-back guarantee stated on the maker's own page
Caveats
- Only five settings, with nothing under 15 pounds and 10 pound jumps
- Nineteen inches long per dumbbell at every setting
- One-year warranty with no component breakdown published
Read the full FLYBIRD DB2 Quick Adjustable Dumbbell, 55 lb, Set of 2 guide
NÜOBELL 580 Adjustable Dumbbells, 5-80 lb Pair
Home lifters who want one pair covering 5 to 80 pounds in 5 pound steps
A pair of twist-handle adjustable dumbbells that select 5 to 80 lb per hand in 5 lb steps, with cradles included. NÜO's manual restricts them to indoor residential use and weight changes in the cradle only. The listing's four-year warranty claim does not match NÜO's two years, with two more only for direct purchases.
Published specifications
- 5 to 80 lb per dumbbell in 5 lb increments
- Handle weight shown may vary by up to 5 percent
- 485 x 193 x 185 mm (L x W x H), per NÜO
- Aluminum handle, 105 mm long, 32 mm diameter, per NÜO
- Indoor residential use only, per the manual
- Two-year warranty; four only when bought from NÜO
Strengths
- Sixteen settings from 5 to 80 lb in one pair
- Weight is chosen by turning the handle while it sits in the cradle
- Manual says it is factory-lubricated and needs no further treatment
Caveats
- Listing's four-year warranty differs from NÜO's two years
- Must be adjusted in the cradle and never dropped
- Residential use only; no commercial or gym use
Read the full NÜOBELL 580 Adjustable Dumbbells, 5-80 lb Pair guide
How to choose between them
Choose the FLYBIRD DB2 Quick Adjustable Dumbbell, 55 lb, Set of 2 if your situation matches: Big weight jumps rather than small progressive steps. Its main caveat: Only five settings, with nothing under 15 pounds and 10 pound jumps.
Choose the NÜOBELL 580 Adjustable Dumbbells, 5-80 lb Pair if your situation matches: Home lifters who want one pair covering 5 to 80 pounds in 5 pound steps. Its main caveat: Listing's four-year warranty differs from NÜO's two years.
Both entries repeat what each guide records. Confirm the model, included parts and availability on the current listing before ordering.
Primary sources
- Maker product page for the Flybird Series DB2 Quick Adjustable Dumbbell 55LBS Source for FLYBIRD DB2 Quick Adjustable Dumbbell, 55 lb, Set of 2
- Flybird 55LBS Quick Adjustable Dumbbell user manual (maker PDF, safety page read by render) Source for FLYBIRD DB2 Quick Adjustable Dumbbell, 55 lb, Set of 2
- NÜO Athletics NÜOBELL 580 adjustable dumbbells product page Source for NÜOBELL 580 Adjustable Dumbbells, 5-80 lb Pair
- NÜOBELL user manual for the 220, 232, 550 and 580 Source for NÜOBELL 580 Adjustable Dumbbells, 5-80 lb Pair
- NÜO Athletics user manual index Source for NÜOBELL 580 Adjustable Dumbbells, 5-80 lb Pair
Primary sources checked .