The J ONE JHN03 Heated Arm Sleeves put the heating element at the elbow and let warmth spread toward the upper arm and forearm. Instead of running heating wires down the full length of the sleeve, JHN03 concentrates heat in one zone so the rest of the sleeve stays thin and flexible.
Elbow-Centered Heating
The heating zone sits around the elbow as the single source of warmth. From there, heat reaches the surrounding arm areas, which keeps the sleeve light and easy to move in rather than stiff from heating elements running its whole length.
Three Adjustable Heat Levels
A built-in controller switches between High, Middle, and Low. Pick the level that matches the weather and your activity instead of running at maximum all the time.
Flexible, Low-Profile Fit
With heat concentrated at the elbow, the rest of the sleeve avoids bulky wiring. A zipper and anti-slip grip keep it in place during cycling, commuting, or work, without limiting normal arm movement.
Specifications
- Heating zone: elbow
- Heat levels: 3 (High / Middle / Low)
- High: 60–65°C / 140–149°F, 2–2.5 h
- Middle: 50–55°C / 122–131°F, 4.5–5 h
- Low: 40–45°C / 104–113°F, 6–7 h
- Battery: 3.7V / 3000 mAh, removable
- Charging: DC interface
- Sizes: S / M / L / XL
- Care: remove battery, hand wash
- Certifications: CE / FCC / RoHS (for OEM/ODM orders)
- MOQ: 500 PCS (OEM/ODM)
Built for Cold-Weather Use
JHN03 fits outdoor work, cycling, commuting, and winter activities where the elbow and arms need extra warmth. It also layers under jackets as part of a cold-weather system.
OEM / ODM Development
J ONE develops heated wearables for OEM and ODM clients. For heated arm sleeves, that can cover heating-zone placement, power-system integration, temperature control, fit, and product-specific functions.
JHN03 Heated Arm Sleeves FAQ
How long does the JHN03 battery last per charge?
Runtime depends on the heat level. On High (60–65°C / 140–149°F) the JHN03 runs about 2–2.5 hours, on Middle (50–55°C / 122–131°F) about 4.5–5 hours, and on Low (40–45°C / 104–113°F) about 6–7 hours. The 3.7V / 3000 mAh battery is removable and swappable.
How do I charge the JHN03 heated arm sleeves?
Remove the battery pack from the sleeve and charge it via the DC interface. The removable design means the sleeves can stay on while the battery swaps out for a fresh one.
What sizes are available for JHN03?
JHN03 is offered in S, M, L, and XL. The zipper closure allows minor fit adjustment around the arm.
Can the JHN03 arm sleeves be washed?
Yes — disconnect and remove the battery first, then hand wash the sleeve. Do not machine wash or tumble dry.
What certifications are available for OEM/ODM orders?
J ONE supports CE, FCC, and RoHS for JHN03 OEM/ODM orders. Other regional certifications can be discussed per project.
What is the minimum order quantity for custom JHN03 orders?
The standard MOQ is 500 PCS for OEM/ODM orders. Specific quantities for sampling can be discussed with the J ONE sales team.
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