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Operating Manual  
P8420 
Rechargeable Hand Warmer  

Thank you for purchasing the P8420 Rechargeable Hand Warmer. If your hands and fingers 

feel icy whether you’re indoors or out, then our Hand Warmer is for you. Slim and lightweight, you 
can carry it with you anywhere you need a convenient source of soothing heat. This unit will 
provide you with years of service if cared for properly. Please read these operating instructions 
thoroughly before use. 

How to Use: 

 

•  

Charging the Warmer 

1.  Plug the USB cable into a computer or USB socket AC/Car Adapter to begin 

charging. A Red LED lamp will light up above the “Charging” symbol on the unit. 

2.  When the Hand Warmer is finished charging, the Red LED lamp will turn Green. 

•  

Use

 

1.  Press the ON/OFF button to start heating the Hand Warmer; a Green LED lamp will 

light up above the “Warming” symbol. 

2.  When the Hand Warmer has reached 106°F (41.1°C) the warming LED lamp will turn 

off and stop heating. If the temperature of the unit falls below 106°F (41.1°C) the 
Green warming LED lamp will light up and being reheating the unit. 

3.  When the Hand Warmer is low in power, the warming LED lamp will turn Red 

indicating the user to recharge the unit. 

4.  To turn the Hand Warmer off, press the ON/OFF button. The warming LED lamp will 

shut off. 

•  

Note

 

When in use, it is normal for some areas of the housing to be warmer than others. 

•  

Caution

 

1.  Charge the Hand Warmer fully before first use. 
2. 

DO NOT

 drop, disassemble or attempt to repair the Hand Warmer yourself. 

3.  Avoid exposure to water, high humidity, or any heat source. 

Specifications: 

 

Model: 

 

P8420 

Power Supply: 

Rechargeable by mini USB port (5v/600mAh Max Input) 

Built-in Battery: 

Lithium-ion Battery 

Charging Time: 

1 ½ - 2 ½ Hours 

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