Pebble-shaped rechargeable hand warmer in an open palm

Hands holding the hand warmer outdoors in falling snow

Hand warmer charging a smartphone as a power bank

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Product detail

2-in-1 Hand Warmer Power Bank

A pebble-shaped double-sided hand warmer with three heat levels and up to 8 hours of runtime, built around a 6000 mAh battery that also charges your phone over USB-C.

Price

$23.99

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Why Buy This

Heats both sides to 45-52°C within three seconds of switching on
Up to 8 hours of warmth on one charge - a full ski day
Doubles as a 6000 mAh USB-C power bank for your phone
Smooth pebble shape with no corners - comfortable in a pocket or glove
Temperature display shows the exact level at a glance

A pebble-shaped hand warmer that heats to 52°C in three seconds and doubles as a 6000 mAh power bank. Double-sided heat, three levels, up to 8 hours warm.

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Product Highlights

Three seconds to warm

No shaking, no waiting, no single-use packets. Click the button and both faces of the pebble warm your palms within three seconds, at the exact temperature you picked.

Useful after winter too

The 6000 mAh cell that keeps your hands warm also refills a phone. It lives in your bag year-round instead of hibernating in a drawer until December.

Shaped like a river stone

No corners, no seams to dig into your palm - just a smooth pebble that sits naturally in a pocket, a glove, or wrapped in both hands at the bus stop.

Specification

Heat Levels: 45 / 48 / 52°C, double-sided heating
Heat-Up Time: Warm in 3 seconds, full temperature in 30 seconds
Runtime: Up to 8 h low, 5 h medium, 3.5 h high
Battery: 6000 mAh, doubles as USB-C power bank
Display: LED temperature and battery display
Safety: Overheat, overcharge, and short-circuit protection

Dimensions

Size: 10 x 6.8 x 2.6 cm pebble shape
Weight: 165 g

Package

Included: Hand warmer, USB-C cable, storage pouch
Warranty: 12-month replacement warranty

Product Details

Warm hands, charged phone, one pebble. This hand warmer heats both sides to a chosen 45, 48, or 52°C within three seconds of switching on, and runs up to 8 hours on the lowest setting - enough for a football match, a ski day, or a winter commute both ways.

When you do not need the heat, the same 6000 mAh battery charges your phone over USB-C, so it earns its pocket space year-round. The smooth pebble shape has no sharp corners and slips into a coat pocket or glove.

What is included: hand warmer, USB-C cable, and a soft storage pouch.

Customer feedback

Ratings & Reviews

4.7 6 reviews

Fiona · Ireland Verified purchase
July 2, 2026

I have Raynaud's and this is the first winter gadget that actually works fast enough. Three seconds is not an exaggeration. The pebble shape means no edges pressing into my palm.
Henrik · Norway Verified purchase
June 18, 2026

Used it all last season: ice fishing, ski lifts, dog walks. Battery still performs like new and it topped up my phone on a cabin trip when the power went out. Buying a second one for my wife.
Zoe · United States Verified purchase
May 28, 2026

Warms instantly and the display is handy. Four stars because at the highest setting the battery drains faster than I hoped - but level two is honestly enough for most days, and that lasts my whole commute week... I mean day.
Ben · United Kingdom Verified purchase
May 10, 2026

Bought for stadium season and it outlasts every match including extra time. Security at the airport did not blink at it. The pouch keeps it from scratching in my bag.
Amara · United States Verified purchase
April 21, 2026

My hands are always freezing at my desk and I keep this next to the keyboard on low. It doubles as my emergency phone battery. One gadget, two jobs, zero regrets.
Jonas · Switzerland Verified purchase
April 3, 2026

Solid quality and genuinely double-sided heat. I would love a wrist strap attachment point, but it fits in ski jacket pockets fine. The 52°C setting is seriously warm - level one is enough most days.

Questions & Answers

Answers to the questions buyers ask most before ordering.

How warm does it get, and can I control the temperature?

There are three fixed levels: 45, 48, and 52°C, cycled with a single button and shown on the LED display so you always know the current setting. Both faces of the pebble heat evenly. Level one is a gentle pocket warmth; level three is the "just came in from a blizzard" setting. It reaches noticeable warmth within three seconds and full temperature in about half a minute.

How long does the heat last on one charge?

On the lowest setting it runs up to 8 hours - enough for a full ski day or a long match plus the commute. Medium runs about 5 hours and the highest setting about 3.5 hours. The display shows remaining battery, and you can stretch runtime by switching it off between uses; it reheats in seconds anyway.

Can it really charge my phone, and how much charge does it give?

Yes - plug in any USB-C cable and it works as a standard 6000 mAh power bank, which is roughly one full charge for most phones. Keep in mind heat and charging draw from the same battery: if you have used half the battery keeping warm, about half a phone charge remains. Many customers keep it topped up as their everyday backup battery outside winter.

Is it safe to hold for long periods or to fall asleep with?

The maximum temperature of 52°C is set below the threshold where brief contact burns occur, and the warmer has overheat, overcharge, and short-circuit protection built in. For extended continuous skin contact - like falling asleep holding it - we recommend the lowest setting or keeping it in a pocket rather than directly against skin, the same guidance as any heating product.