OCOOPA HeatCube 2500mAh Rechargeable Hand Warmer｜3-Level Temperature Control × 5-Hour Heating × LED Flashlight｜Compact & Pocket-sized・The Perfect Winter Gift

OCOOPA HeatCube 2500mAh Rechargeable Hand Warmer—a palm-sized cube combining hand warming, lighting, and a security alarm. Original authentic product, one-year warranty.
Are your hands freezing in winter, making it painful to use your phone, write, or wait for the bus? The OCOOPA HeatCube rechargeable hand warmer features a built-in 2500mAh lithium battery. With a single click, it provides rapid double-sided heating in just 3–5 seconds. Choose from three temperature settings between 37–50°C, with up to 5 hours of continuous warmth. Measuring just 72 × 55 × 25 mm and weighing 79g, it comes equipped with a warm yellow LED flashlight and a 105dB±5 alarm buzzer, keeping you safe during late-night returns or camping trips. The temperature memory function recalls your last setting, so it's warm the moment you turn it on. Available in four colors, it is a thoughtful item for yourself or as a winter gift. ※Perception may vary from person to person.

2500mAh Battery | Three Temperature Settings 37–50°C | Rapid Double-Sided Heating | Up to ~5 Hours of Warmth | Warm Yellow LED Flashlight | 105dB Alarm Buzzer | Temperature Memory | Original Authentic Product with One-Year Warranty

Do you experience these troubles?

• Your hands are freezing in winter, but wearing gloves makes it inconvenient to use your phone, write, or operate a camera.
• Disposable heat packs provide inconsistent warmth and create waste; you end up using dozens throughout the winter.
• General rechargeable hand warmers are too bulky and heavy, feeling like carrying a brick in your pocket.
• You want a small flashlight to guide your way during late-night returns or camping, but don't want to carry extra gear.
• You want a practical, exquisite, and high-quality gift for winter.

Why are hands always particularly cold in winter?

When temperatures drop, the body prioritizes blood flow to the core and vital organs, while circulation to extremities like fingers decreases. This is why hands are often the first to feel cold, especially when holding a phone or sitting outdoors for a long time. The OCOOPA HeatCube uses double-sided heating plates to provide a gentle heat source of 37–50°C directly to your palms, making it easier to stay warm and comfortable. The three temperature settings can be adjusted according to the weather and personal preference to avoid overheating or insufficient warmth. ※Perception may vary from person to person.

Three Highlight Features

1. Three Temperature Settings, Rapid Double-Sided Heating

Level 1 (37–42°C) for gentle warmth, Level 2 (42–46°C) for a comfortable feel, and Level 3 (46–50°C) to fight off cold winds. It starts heating up in about 3–5 seconds after pressing the power button, with heat emitting from both sides, allowing you to feel the warmth evenly whether your hands are clasped together or the device is in your pocket. ※Perception may vary from person to person.

2. 2500mAh Battery, Up to ~5 Hours of Warmth

The built-in 2500mAh lithium battery provides up to 5 hours of continuous heating on the low setting, enough for commuting, attending classes, watching games, or short outings. The temperature memory function remembers your last setting, so there's no need to reset it next time.

3. Warm Yellow LED Flashlight and 105dB Alarm Buzzer

The side features a built-in warm yellow LED flashlight that provides soft, non-glaring light—convenient for finding keys when returning home late or guiding your way while camping. The independent alarm buzzer emits a high-decibel sound of 105dB±5, helping to attract attention in emergencies. It is perfect for those walking home alone at night, the elderly, and students.

Thoughtful Design

• Palm-sized and Ultra-compact: 72 × 55 × 25 mm, weighing only 79g—virtually effortless to carry in your pocket, gloves, or small handbag.
• Temperature Memory Function: Automatically returns to the last temperature setting each time it is turned on, saving you from repeated button presses.
• Four Colors Available: Vibrant colors combined with a sleek, rounded cube shape make it stylish for yourself and elegant for gifting.
• OCOOPA Patented Design: Features clean lines and a smooth surface, ensuring comfort even when held for long periods.

Product Specifications

Contents: HeatCube Hand Warmer ×1, USB Charging Cable ×1, Lanyard ×1, User Manual ×1

How to Use

Usage Tips

• Charge fully before heading out and start with Level 1; adjust to higher levels based on the weather for longer battery life.
• Using it inside a pocket or glove reduces heat loss, extending the heating duration.
• For long-term storage, we recommend charging it every 2–3 months to maintain battery health.
• Wipe the surface with a slightly damp, soft cloth; avoid using alcohol or corrosive cleaning agents.

Important Precautions

This product is a household rechargeable hand warmer and is not medical equipment.

The following individuals should not use this device, or should consult a doctor first:

• Individuals with reduced temperature sensitivity or poor peripheral circulation.
• Those with wounds, inflammation, or eczema on their hands.
• Infants, young children, or those unable to express discomfort.
• Pregnant women or those undergoing specific medical treatments should consult a doctor before use.

Do Not

• Do not use while sleeping or inside bedding.
• Do not keep on high settings against the same skin area for prolonged periods.
• Do not allow children to use it unattended or as a toy.
• Do not disassemble, crush, submerge in water, or bring near fire sources.

During Use

• If you feel excessive heat, tingling, or discomfort, stop using immediately.
• We recommend using the high setting over thin gloves or clothing; avoid prolonged direct contact.
• Do not use the heating function while the device is charging.
• Use a 5V standard charger and keep away from flammable materials while charging.

Who is it for?

• Office workers and students whose hands are easily cold in winter and need to stay warm while using their phones.
• People who want to warm their hands quickly during commutes, waiting in lines, watching games, or outdoor photography.
• People who need lightweight gear that also provides lighting for camping, hiking, or night running.
• Individuals returning home alone at night, the elderly, or students who want a portable emergency alarm.
• Those who want an eco-friendly, reusable alternative to disposable heat packs.
• Anyone looking for an exquisite winter gift for cold-sensitive family, friends, or partners.

FAQs

Q1: What is the difference between HeatCube and regular rechargeable hand warmers?
A: At only 79g and palm-sized, HeatCube integrates three-level double-sided heating, a warm yellow LED flashlight, a 105dB alarm buzzer, and temperature memory. It combines warmth, lighting, and safety in one small device, perfect for those who prioritize portability.

Q2: Is the temperature too high or will it burn my hands?
A: Level 1 (37–42°C) is close to body temperature, suitable for most users for extended periods; Level 3 (46–50°C) is recommended for short-term use over gloves or clothing. If it feels too hot, you can lower the setting or stop using it. ※Perception may vary from person to person.

Q3: Does it require any consumables?
A: No. HeatCube has a built-in 2500mAh rechargeable lithium battery. Charge it repeatedly using a USB cable; there's no need to buy heat packs or replace cells, making it more eco-friendly.

Q4: Can the flashlight and alarm be used without the heating function?
A: Yes. The flashlight and alarm buzzer are independent functions and can be used without the heating enabled, serving as a portable light or safety alarm even in summer.

Q5: Is it suitable for people with small hands, the elderly, or students?
A: Yes. The 72 × 55 × 25 mm cube fits easily in one hand even for users with small hands. Operation requires only one button. With the alarm feature, it provides extra peace of mind for the elderly and students. Children should be accompanied by an adult.

Q6: Will my hands definitely get warm after using it?
A: HeatCube provides a stable heat source of 37–50°C, generally helping keep hands warm and comfortable. However, the actual perception depends on ambient temperature, personal physical condition, and usage method. We do not guarantee any specific effect. ※Perception may vary from person to person.

Q7: Can people with sensitive skin use it?
A: Individuals with sensitive skin can start on Level 1, using it over thin gloves while monitoring their skin's reaction. If you have wounds, inflammation, or a history of sensitivity to heat sources, we recommend consulting a doctor before use.

Q8: How long does the battery last? How should I maintain it?
A: The low setting lasts up to 5 hours; higher settings have shorter durations. This is an original authentic product with a one-year warranty. For daily maintenance, simply wipe the body with a slightly damp cloth and avoid submerging it in water.

Three-level rapid heating × warm yellow flashlight × security alarm—the OCOOPA HeatCube rechargeable hand warmer keeps the warmth and peace of mind of the entire winter right in the palm of your hand ✨