Sunny Health & Fitness Under Desk Pedal Elliptical
- Maximum Weight Recommendation: 300 pounds
- Number Of Resistance Levels: 8
- Maximum Stride Length: 7 inches
- Material Type: Alloy Steel
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact 25 pound magnetic resistance pedal exerciser rated for users up to 300 pounds, suited to low impact seated cycling rather than standalone cardio training.
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ASIN: B07MWV1JD7Model: SF-E3872Category: Leg Exercisers
Overview
Magnetic resistance sets the Sunny SF-E3872 apart from basic pedal exercisers, offering smooth adjustable resistance in a compact 25 by 19 by 11 inch unit rated for users up to 300 pounds.
Magnetic resistance is the detail that separates this from basic friction pedal exercisers, since it adjusts smoothly and runs quieter over time. At 25 pounds and a footprint of 25 by 19 by 11 inches, it reads as a compact unit meant for use under a desk or beside a chair rather than a full size exercise bike.
- Magnetic resistance
- 300 pound capacity
- 25 pound unit weight
- 25 x 19 x 11 inch footprint
Who it's for
People doing seated leg or arm cycling for low impact conditioning, rehab style movement or desk based activity. Not a substitute for a full exercise bike given its compact size.
Pros and cons
- Magnetic resistance runs quieter than friction models
- 300 pound weight capacity fits most users
- Compact footprint suits desk or chair use
- No seat, so it needs a separate chair
- Not a substitute for a full exercise bike
Performance notes
Magnetic resistance systems adjust smoothly across a range and tend to run quieter than friction based pedal units, which matters if this sits near a desk or shared room. The 300 pound weight capacity covers most adult users, and at 25 pounds the unit is light enough to move but heavy enough to stay steady while pedaling.
Specifications
| Brand | Sunny Health & Fitness |
|---|---|
| Model | SF-E3872 |
| Dimensions & fit | |
| Maximum Weight Recommendation | 300 poundshigher than 57% of 24 leg exercisers |
| Maximum Stride Length | 7 inches |
| Item Weight | 25 poundshigher than 100% of 42 leg exercisers |
| Display Size | 1.7 inches |
| Item Dimensions D X W X H | 25 × 19 × 11 inches |
| Item Length | 7 inches |
| Construction & materials | |
| Material Type | Alloy Steel |
| Color | White |
| Included components | |
| Included Components | Elliptical, User Manual |
| Warranty & support | |
| Warranty Description | 1 Year |
| Other details | |
| Number Of Resistance Levels | 8 |
| Item Type Name | Under Desk Elliptical |
| Resistance Mechanism | Magnetic |
Closest rivals on specs
Lifepro FlexCycle Under Desk Elliptical and Mini Bike- Item Weight 25 vs 18.1 pounds (+38%)
- Maximum Weight Recommendation 300 vs 440 pounds (-32%)
Phyciser Motorized Physical Therapy Exercise Bike- Item Weight 25 vs 34 pounds (-26%)
- Maximum Weight Recommendation 300 vs 220 pounds (+36%)
Cubii Move Under Desk Elliptical- Item Weight 25 vs 17.6 pounds (+42%)
- Maximum Stride Length 7 vs 18 inches (-61%)
Frequently asked questions
What is the weight capacity of the Sunny SF-E3872?
300 pounds.
Does the SF-E3872 use magnetic resistance?
Yes, it uses magnetic resistance.
How much does the Sunny SF-E3872 weigh?
25 pounds.