---
product_id: 773691756
title: "Union UT3 Lite Rechargeable Heater, 2 Pieces, Ultra Lightweight & Thin Hand Warmer, 3 Heating Levels, Double-Sided Heater, Temperature Memory, Pocket Size, Easy to Carry, Winter Gift, Cold Protection"
brand: "ocoopa"
price: "¥13832"
currency: JPY
in_stock: true
reviews_count: 6
category: "Ocoopa"
url: https://www.desertcart.jp/products/773691756-union-ut3-lite-rechargeable-heater-2-pieces-ultra-lightweight-thin
store_origin: JP
region: Japan
---

# fast heat-up with 20% power density boost 3 heating levels up to 124°F 2 magnetic rechargeable units Union UT3 Lite Rechargeable Heater, 2 Pieces, Ultra Lightweight & Thin Hand Warmer, 3 Heating Levels, Double-Sided Heater, Temperature Memory, Pocket Size, Easy to Carry, Winter Gift, Cold Protection

**Brand:** ocoopa
**Price:** ¥13832
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay warm, stay connected — double the heat, double the style!

## Quick Answers

- **What is this?** Union UT3 Lite Rechargeable Heater, 2 Pieces, Ultra Lightweight & Thin Hand Warmer, 3 Heating Levels, Double-Sided Heater, Temperature Memory, Pocket Size, Easy to Carry, Winter Gift, Cold Protection by ocoopa
- **How much does it cost?** ¥13832 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/773691756-union-ut3-lite-rechargeable-heater-2-pieces-ultra-lightweight-thin)

## Best For

- ocoopa enthusiasts

## Why This Product

- Trusted ocoopa brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual Magnetic Warmth:** Snap together or separate for versatile, double-sided heating—perfect for sharing or warming both hands simultaneously.
- • **Rapid Heat Activation:** Experience cozy warmth in seconds thanks to a 20% increase in power density and premium aluminum heat dissipation.
- • **Smart Temperature Memory:** Set your ideal heat level and the device remembers it, so you stay comfortably warm without fiddling with controls.
- • **Ultra-Light & Pocket-Ready:** At just 65g and 0.7 inches thin, it slips effortlessly into your pocket or gloves—warmth on the go without bulk.
- • **Certified Safety & Durability:** PSE/UL/CE/FCC certified with reinforced dust protection and smart temperature control for worry-free use outdoors.

## Overview

The OCOOPA Union UT3 Lite is a sleek, ultra-light rechargeable hand warmer featuring dual magnetic units for flexible use, 3 adjustable heat settings up to 124°F, and rapid heat-up technology. Designed with premium materials and smart temperature memory, it offers safe, durable, and pocket-friendly warmth ideal for outdoor enthusiasts and professionals alike.

## Description

desertcart.co.jp: OCOOPA Union UT3 Lite Rechargeable Cairo x 2 Units, Ultra Lightweight & Thin Hand Warmer, 3 Heating Levels, Double-Sided Heating, Temperature Memory, Pocket Size, Electric Heater, Easy to Carry, : Home & Kitchen

Review: 軽いし、小さいので、使い勝手良く毎日使っています。
Review: Work great 👍🏻 . Fully recharge in a couple of hours . Come with dual charge cable and handy carry straps and bag . Surprisingly hot on full power 👍🏻👍🏻

## Features

- 【2 Magnetic Rechargeable Cairo】These two small electric stoves are attached to a strong magnet, but can be easily removed if necessary. Combine two chiros to create one palm size chiro, separate them into your pocket, and hold one on each hand for both hands and keep both hands warm. You can share it with your family and friends
- 【Fast Dissipation】 With 20% increase in power density, UT3Lite will warm up in seconds. Extremely durable and smooth unibody adopts premium brushed aluminum housing to promote heat and even dissipation
- 3 Temperature Levels & Temperature Memory: UT3Lite has 3 heating settings ranging from comfortable warmth to 124°F (52°C). Choose the most comfortable temperature. Remember the previous heating stage, and you can easily operate it by switching to that stage
- (Superior safety) Safety is our top priority. High-quality chip and durable ABS material provide smart temperature control. PSE/UL/CE/FCC Certified after rigorous testing and made to keep you safe and comfortable warm. Reinforced details such as rubber cover to protect the charging port from dust and pocket contamination
- 【Ultra Lightweight and Ultra-Thin】The UT3 Lite with a thickness of 0.7 inch (1.85 cm) can easily fit in your gloves or pocket. Each weighs only 65g and is 40% lighter than iPhone. It is easy to put in your pocket or gloves, and it is easy to hold for a long time

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 4.8 x 8.6 x 1.5 cm; 64 g |
| Color | Pink |
| Material Type | Acrylonitrile Butadiene Styrene |
| Included Components | 2 x Rechargeable Chiro, 21 Charging Cable, Storage Bag, User Manual |

## Product Details

- **Brand:** OCOOPA
- **Color:** Pink
- **Material:** Acrylonitrile Butadiene Styrene
- **Battery Description:** Lithium
- **Included Components:** 2 x Rechargeable Chiro, 21 Charging Cable, Storage Bag, User Manual

## Images

![Union UT3 Lite Rechargeable Heater, 2 Pieces, Ultra Lightweight & Thin Hand Warmer, 3 Heating Levels, Double-Sided Heater, Temperature Memory, Pocket Size, Easy to Carry, Winter Gift, Cold Protection - Image 1](https://m.media-amazon.com/images/I/51JWIDbxR8L.jpg)

## Questions & Answers

**Q: Why do we need rechargeable hand warmers instead of disposable hand warmers?**
A: Rechargeable hand warmers are a climate friendly and economical choice. They can be used repeatedly, create less waste, and are stronger and more durable than disposable ones, making them perfect for outdoor activities and cold weather.

**Q: Will these hand warmers be easy and safe to put into gloves?**
A: UT3 Lite hand warmer is ultra-thin and lightweight, with a thickness of only 1.85cm. It is easy to put into gloves or pockets and is UL safety certified for safety.Safety Tip: Avoid prolonged direct contact with skin to prevent low-temperature burns.

**Q: How are the heating settings and how long will they stay charged?**
A: UT3 Lite has 3 heat levels: low, medium, and high. Each level provides different warmth intensity and duration:

**Q: Do I need to charge the two hand warmers separately, and how long does it take?**
A: We provide a 2-in-1 USB-C charging cable to charge the UT3 Lite. It takes approximately 3 hours to fully charge. You do not need two chargers or cables to recharge the hand warmers.

**Q: What makes Ocoopa different?**
A: Ocoopa is a leading US brand for rechargeable hand warmers. Our products are powerful, long-lasting, and safe, putting our customers first. We also prioritize sustainability by recycling batteries and supporting the Raynaud's Association.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by ち***え on December 28, 2023*

軽いし、小さいので、使い勝手良く毎日使っています。

### ⭐⭐⭐⭐⭐ Review
*by I***N on September 24, 2025*

Work great 👍🏻 . Fully recharge in a couple of hours . Come with dual charge cable and handy carry straps and bag . Surprisingly hot on full power 👍🏻👍🏻

### ⭐⭐⭐⭐⭐ Review
*by T***E on May 14, 2025*

Utilissimi nella stagione fredda. Si scaldano in un attimo e fanno un bel po di calore. Apprezzato il fatto che siano regolabili.

## Frequently Bought Together

- OCOOPA Magnetic Rechargeable Hand Warmers 2 Pack, Ultrathin Electric Handwarmers, Portable Pocket-Sized Heater, for Men, Women Purse Must Haves, Union UT3 Lite
- OCOOPA Magnetic Hand Warmers Rechargeable 2 Pack, AI Electric Handwarmers, Fast Heating, 3-Settings, UL Certified, Portable Heater, Gloves Fitting, Travel Essentials, Gifts Women Men, UT3 Lite
- OCOOPA Magnetic Rechargeable Hand Warmers 2 Pack, Card-Style Electric Hand Warmer 5000mAh, Pocket Portable Hands Heater, UL Certified, 3 Heat Settings, Tech Gifts for Men, Purse Must Haves, UT4 Young

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**Shop now:** [https://www.desertcart.jp/products/773691756-union-ut3-lite-rechargeable-heater-2-pieces-ultra-lightweight-thin](https://www.desertcart.jp/products/773691756-union-ut3-lite-rechargeable-heater-2-pieces-ultra-lightweight-thin)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-10*