Best for app tracking
Sunny Health & Fitness SF-E323017
FitScore for Under Desk Elliptical
- InclineNot stated
- ResistanceMagnetic, 8 levels
- Max user weight300 lb
- Warranty1 year frame, 6 months p…
Choose it if you want app tracking over Bluetooth on a 22.8 by 18.1-inch base.
Best for simple pedaling
Sunny Health & Fitness SF-E3872
FitScore for Under Desk Elliptical
- InclineNot stated
- ResistanceMagnetic, 8 levels
- Max user weight300 lb
- Warranty1 year frame, 6 months p…
Choose it if you want the same 7-inch stride and 8 levels without an app, with a 3.52-lb flywheel.
Overall winner for desk use: Sunny Health & Fitness SF-E323017, by 3.5 points (62 against 58.5) with the weights of our best under desk elliptical guide. It leads on features.
Sunny Health & Fitness SF-E323017 wins 1 round- Sunny Health & Fitness SF-E3872 wins 0 rounds
- =4 ties
Product photos from Amazon. FitScore weights are explained below.
Sunny SF-E323017 vs SF-E3872: both are seated Sunny under-desk ellipticals with a 7-inch stride, 8 magnetic levels and a 300-lb rating. The SF-E323017 is slightly smaller and adds Bluetooth with the free SunnyFit app. Our FitScore favors it for desk use.
Head-to-Head Specs
Here are the two side by side. A check mark shows the stronger spec on each line. Check both warranties before you order: the FTC explains how to read a product warranty. The CDC recommends that adults get at least 150 minutes of moderate-intensity aerobic activity a week, which steady elliptical sessions count toward. Harvard Health Publishing lists about 324 calories in 30 minutes of general elliptical exercise for a 155 lb person.
| Specification | Sunny Health & Fitness SF-E323017FitScore 62 | Sunny Health & Fitness SF-E3872FitScore 58.5 |
|---|---|---|
| Type | Under-desk (seated) | Under-desk (seated) |
| Stride length | 7 in | 7 in |
| Resistance | Magnetic, 8 levels | Magnetic, 8 levels |
| Flywheel | 3.3 lb | 3.52 lb✓ |
| Incline | Not stated | Not stated |
| Step-on height | 3.4 in | 3.46 in |
| Max user weight | 300 lb | 300 lb |
| Size (length × width) | 22.8 × 18.1 in | 25 × 19 in |
| Product weight | 23.8 lb✓ | 25 lb |
| Handlebars | Not stated | Not stated |
| Console and programs | Basic LCD console (programs not stated) | Basic LCD console (programs not stated) |
| Bluetooth and apps | Bluetooth, SunnyFit (free) | No Bluetooth or app listed |
| Heart rate | Not stated | Not stated |
| Membership | None needed | Not stated |
| Storage and moving | No transport wheels listed, 23.8 lb | No transport wheels listed, 25 lb |
| Warranty | 1 year frame, 6 months parts | 1 year frame, 6 months parts |
| Specs won | 1 of 16 | 1 of 16 |
Check Amazon for current pricing and availability.
FitScore Duel
Both scores use the weights of our best under desk elliptical guide (how we score). Practicality (30%) counts most, then performance and durability (15% each) and comfort, features and affordability (10% each). The Sunny Health & Fitness SF-E323017 ranks #1 in that guide. The Sunny Health & Fitness SF-E3872 ranks #2 in that guide.
Key Differences
- Flywheel: 3.3 lb on the Sunny Health & Fitness SF-E323017; 3.52 lb on the Sunny Health & Fitness SF-E3872.
- Step-on height: 3.4 in on the Sunny Health & Fitness SF-E323017; 3.46 in on the Sunny Health & Fitness SF-E3872.
- Size (length × width): 22.8 × 18.1 in on the Sunny Health & Fitness SF-E323017; 25 × 19 in on the Sunny Health & Fitness SF-E3872.
- Product weight: 23.8 lb on the Sunny Health & Fitness SF-E323017; 25 lb on the Sunny Health & Fitness SF-E3872.
- Bluetooth and apps: Bluetooth, SunnyFit (free) on the Sunny Health & Fitness SF-E323017; No Bluetooth or app listed on the Sunny Health & Fitness SF-E3872.
- Membership: None needed on the Sunny Health & Fitness SF-E323017; not stated on the Sunny Health & Fitness SF-E3872.
- Storage and moving: No transport wheels listed, 23.8 lb on the Sunny Health & Fitness SF-E323017; No transport wheels listed, 25 lb on the Sunny Health & Fitness SF-E3872.
Round 1 of 5
Sunny SF-E323017 vs SF-E3872: Stride and Resistance
Tie. Neither model has a clear edge here.
Stride length: both list 7 in.
Resistance: both list magnetic, 8 levels.
Flywheel: 3.3 lb on the Sunny Health & Fitness SF-E323017, 3.52 lb on the Sunny Health & Fitness SF-E3872.
Performance score in this comparison: Sunny Health & Fitness SF-E323017 20, Sunny Health & Fitness SF-E3872 20.
Round 2 of 5
Capacity, Build and Warranty
Tie. Neither model has a clear edge here.
Capacity and warranty are the stated measures of build.
Max user weight: both list 300 lb.
Warranty: both list 1 year frame, 6 months parts.
Durability score in this comparison: Sunny Health & Fitness SF-E323017 46.94, Sunny Health & Fitness SF-E3872 46.94.
Round 3 of 5
Comfort and Fit
Tie. Neither model has a clear edge here.
Comfort comes down to fit and how you sit or stand.
Type: both list under-desk (seated).
Step-on height: 3.4 in on the Sunny Health & Fitness SF-E323017, 3.46 in on the Sunny Health & Fitness SF-E3872.
Comfort score in this comparison: Sunny Health & Fitness SF-E323017 70, Sunny Health & Fitness SF-E3872 70.
Round 4 of 5
Size, Weight and Storage
Tie. Neither model has a clear edge here.
Size (length × width): 22.8 × 18.1 in on the Sunny Health & Fitness SF-E323017, 25 × 19 in on the Sunny Health & Fitness SF-E3872.
Product weight: 23.8 lb on the Sunny Health & Fitness SF-E323017, 25 lb on the Sunny Health & Fitness SF-E3872.
Check the clearance under your desk: you sit behind the machine, so knee room matters more than floor area.
Practicality score in this comparison: Sunny Health & Fitness SF-E323017 75, Sunny Health & Fitness SF-E3872 75.
Round 5 of 5
Console and Extras
Sunny Health & Fitness SF-E323017 wins this round
Console and programs: both list basic LCD console (programs not stated).
Bluetooth and apps: Bluetooth, SunnyFit (free) on the Sunny Health & Fitness SF-E323017, No Bluetooth or app listed on the Sunny Health & Fitness SF-E3872.
Membership: None needed on the Sunny Health & Fitness SF-E323017; not stated on the Sunny Health & Fitness SF-E3872.
Features score in this comparison: Sunny Health & Fitness SF-E323017 35, Sunny Health & Fitness SF-E3872 0.
Who Should Buy Each
Desk workers who track activity
Pick the SF-E323017 if you want to log sessions in the free app; it arrives assembled, with a pedal step height that adjusts from 3.4 to 6.9 inches.
Simple pedaling under the desk
Pick the SF-E3872 if you only want to keep your legs moving while you sit and do not need app tracking.
Consider Instead
MERACH MR-E32
If neither fits, look at the MERACH MR-E32: it offers another ranked pick of our best under desk elliptical guide. It ranks #3 in our best under desk elliptical guide.
Final Verdict
Overall winner for desk use: Sunny Health & Fitness SF-E323017. Pick the SF-E323017 for Bluetooth and the free app on a slightly smaller base; pick the SF-E3872 for the same stride and resistance without an app.
Sunny Health & Fitness SF-E323017 vs Sunny Health & Fitness SF-E3872 FAQ
With the weights of our best under desk elliptical guide, the Sunny Health & Fitness SF-E323017 scores higher: 62 against 58.5. It leads on features.
Both have a 7-inch stride, 8 magnetic levels and a 300-lb rating. The SF-E323017 adds Bluetooth and the SunnyFit app and measures 22.8 by 18.1 inches, against 25 by 19 inches for the SF-E3872.
The SF-E323017 weighs 23.8 lb and the SF-E3872 weighs 25 lb.
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