1. Introduction
Thank you for choosing HotHands Rechargeable Hand Warmers. This manual provides essential information for the safe and effective use of your new hand warmers. Please read it thoroughly before operation and retain it for future reference.
Package Contents:
- 2 x HotHands Rechargeable Hand Warmers
- 1 x 2-in-1 Charging Cable
- 2 x Wrist Lanyards
- 1 x User Manual (this document)
- 1 x Warranty Card

The HotHands Rechargeable Hand Warmers are designed to provide quick, long-lasting, and adjustable heat for your hands. They feature three temperature settings and can provide warmth for up to 8 hours on the lowest setting. Their lightweight and compact design makes them suitable for various activities.
2. Safety Information
WARNING: Failure to follow these instructions and warnings could result in serious injuries from electric shock, burns, or fire.
- Read all instructions and warnings in this manual before use.
- Do not expose the hand warmers to extreme temperatures or direct sunlight.
- Do not puncture, disassemble, or modify the device.
- Keep out of reach of children and pets.
- Do not use if the device is damaged or malfunctioning.
- Use only the provided charging cable or a certified equivalent.
- This product contains chemicals, including lead, nickel, and chromium, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
3. Setup
Charging the Hand Warmers:
- Locate the charging port on each hand warmer.
- Connect the provided 2-in-1 charging cable to both hand warmers.
- Plug the USB end of the cable into a compatible USB power adapter (not included) or a computer USB port.
- The indicator lights on the hand warmers will illuminate during charging. A full recharge takes approximately 3.5 hours.
- Once fully charged, disconnect the hand warmers from the charging cable.

Attaching Wrist Lanyards:
Thread the provided wrist lanyards through the designated loop on each hand warmer for added security and convenience.
4. Operating Instructions
Turning On/Off:
- To turn on: Press and hold the power button for a few seconds until the indicator lights illuminate. The hand warmer will start on the lowest heat setting.
- To turn off: Press and hold the power button for a few seconds until the indicator lights turn off.
Adjusting Heat Settings:
The hand warmers feature three adjustable heat settings. Once the device is on, short press the power button to cycle through the settings:
- Low (1 LED light): Approximately 100-108°F (38-42°C), lasting up to 8 hours.
- Medium (2 LED lights): Approximately 109-117°F (43-47°C), lasting up to 6 hours.
- High (3 LED lights): Approximately 118-125°F (48-52°C), lasting up to 4 hours.

The hand warmers heat up quickly, providing warmth within seconds of activation.
5. Maintenance
- Cleaning: Wipe the surface of the hand warmers with a soft, dry cloth. Do not use abrasive cleaners or immerse in water.
- Storage: Store the hand warmers in a cool, dry place when not in use. Ensure they are fully charged before long-term storage to maintain battery health.
- Battery Care: To prolong battery life, avoid completely draining the battery frequently. Recharge when the battery is low.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Hand warmer not turning on | Low battery; Incorrect operation | Charge the hand warmer; Press and hold the power button for several seconds. |
| Hand warmer not heating | Low battery; Device malfunction | Charge the hand warmer; If problem persists, contact customer support. |
| Charging not working | Cable not connected properly; Faulty cable/adapter | Ensure cable is securely connected; Try a different USB port or adapter. |
If you encounter issues not listed here or if problems persist, please contact HotHands Customer Support.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | HotHands Rechargeable Hand Warmer |
| Part Number | H163650 |
| Brand | HotHands |
| Manufacturer | Kobayashi |
| Power Source | Battery Powered (Lithium-Polymer) |
| Charging Time | Approximately 3.5 Hours |
| Heat Settings | 3 (Low, Medium, High) |
| Max Heat Duration | Up to 8 hours (on low setting) |
| Material | Plastic |
| Color | Orange |
| Item Weight | 0.44 Pounds (approx. 200g) |
| Item Dimensions (LxWxH) | 1.9 x 4.2 x 5.7 inches (approx. 4.8 x 10.7 x 14.5 cm) |
| Certifications | UL Certified |
8. Warranty and Support
Warranty Information:
HotHands Rechargeable Hand Warmers come with a 1-year limited warranty from the date of purchase. Please refer to the enclosed Warranty Card for full terms and conditions.
Customer Support:
For any questions, concerns, or support needs, please contact HotHands Customer Service:
- Phone: 1-800-432-8629
- Website: HotHands.com
- Feedback: feedback.HotHands.com