coldSky LY117 Rechargeable Hand Warmers Instruction Manual

1. Product Overview

The coldSky LY117 Rechargeable Hand Warmers are designed to provide portable and adjustable warmth. This 2-pack features a unique magnetic design, allowing them to be used together for double-sided heat or separated for individual use. Equipped with AI temperature control, they offer three heating levels and a quick 3-second heat-up time.

Image: coldSky LY117 Dual Magnetic Hand Warmers. The two oval-shaped hand warmers are shown magnetically connected, illustrating their dual-use capability.

2. What's in the Box

• 2 x coldSky LY117 Rechargeable Hand Warmers
• 1 x USB Charging Cable (dual USB-C for simultaneous charging)
• 1 x User Manual

3. Setup and Initial Use

3.1 Initial Charging

Before first use, fully charge both hand warmers. Use the provided dual USB charging cable. Connect the two USB-C ends to each hand warmer and the standard USB-A end to a compatible power adapter (not included) or a computer USB port.

• The LED digital display on each hand warmer will show the charging progress.
• A full charge typically takes approximately 3 hours.
• Disconnect the cable once the display indicates 100% charge.

3.2 Magnetic Connection

The hand warmers are designed to magnetically snap together for a combined heating experience or can be easily separated for individual use. Ensure they are properly aligned for a secure connection.

4. Operating Instructions

4.1 Power On/Off

• To power on: Long press the power button (located near the charging port) for 3 seconds. The LED display will illuminate.
• To power off: Long press the power button for 3 seconds. The LED display will turn off.

4.2 Adjusting Heat Levels

The hand warmers feature three adjustable heating levels. Once powered on, short press the power button to cycle through the settings:

1. Level 1 (Low): Approximately 104-113°F (40-45°C). Indicated by one light on the display.
2. Level 2 (Medium): Approximately 113-122°F (45-50°C). Indicated by two lights on the display.
3. Level 3 (High): Approximately 122-131°F (50-55°C). Indicated by three lights on the display.

The device heats up in approximately 3 seconds after selecting a heat level.

Image: coldSky LY117 Hand Warmer displaying three heat levels with corresponding temperature ranges: 104-113°F, 113-122°F, and 122-131°F.

4.3 Digital Display

The integrated LED digital display shows the current battery percentage and the selected heat level, providing clear status at a glance.

Image: Close-up of the coldSky LY117 Hand Warmer's LED digital display, showing '100%' battery life and a power button.

5. Maintenance

5.1 Cleaning

Wipe the surface of the hand warmers with a soft, dry cloth. Do not use abrasive cleaners or immerse the device in water.

5.2 Storage

When not in use, store the hand warmers in a cool, dry place away from direct sunlight and extreme temperatures. Ensure they are fully charged before long-term storage to preserve battery life.

6. Troubleshooting

• Device not heating up: Ensure the device is powered on by long-pressing the power button. Check the battery level on the digital display. If the battery is low, recharge the device.
• Device not charging: Verify that the USB charging cable is securely connected to both the hand warmer and the power source. Try using a different USB port or power adapter.
• Device feels too hot: The hand warmers offer three heat levels. If the current setting is too warm, reduce the heat level by short-pressing the power button. If the device feels excessively hot or exhibits unusual behavior, power it off immediately and discontinue use.

7. Safety Information

To ensure safe operation and prevent damage, please observe the following:

• Do not disassemble, modify, or attempt to repair the device.
• Keep away from water and high humidity.
• Do not expose to direct sunlight or high temperatures.
• Keep out of reach of children.
• The device includes built-in safety protections: overheating protection, over-current protection, over-voltage protection, and short-circuit protection.

Image: Diagram illustrating the internal safety protection features of the coldSky LY117 Hand Warmer, including overheating, over-current, over-voltage, and short-circuit protection.

8. Specifications

9. Warranty and Support

9.1 Warranty Information

This coldSky product comes with a 1-year warranty from the date of purchase. Please retain your proof of purchase for warranty claims. The warranty covers manufacturing defects and does not cover damage caused by misuse, accidents, or unauthorized modifications.

9.2 Customer Support

For any questions, concerns, or technical assistance regarding your coldSky LY117 Rechargeable Hand Warmers, please contact coldSky customer support through the retailer's platform or the official coldSky website. Our support team is available to help you.