The P3 P8420 Operating Manual provides charging, usage, safety instructions, specifications, and warranty details for the rechargeable hand warmer.
The P3 P8420 Rechargeable Hand Warmer is a slim, lightweight device that delivers soothing heat for cold hands, whether indoors or outdoors. It is designed for easy portability and long‑term service when cared for properly.
This manual explains how to charge the unit via USB, operate it with the ON/OFF button, interpret LED indicators, and understand safety cautions. It also lists technical specifications, box contents, and the limited six‑month warranty offered by P3 International Corporation.
| Model | P8420 |
|---|---|
| Power Supply | Rechargeable by mini USB port (5 V/600 mAh Max Input) |
| Built‑in Battery | Lithium‑ion Battery |
| Charging Time | 1 ½ – 2 ½ Hours |
| Warm‑up Time | 4‑5 Minutes |
| Duration | up to 3 Hours |
| Maximum Temperature | 106 °F (41.1 °C) |
| Dimensions | 3 5/8" × 1 5/8" × 3/8" (90 × 40 × 8.5 mm) |
| Weight | 1.6 oz |
Plug the USB cable into a computer, USB socket, or AC/Car adapter; a red LED lights up and turns green when charging is complete.
It warms up in 4‑5 minutes, can run for up to 3 hours, and reaches a maximum temperature of 106 °F (41.1 °C).