Flashfish YZC04 Magnetic Rechargeable Hand Warmers, Set of 2

Two hand warmers of 135 g each that snap together magnetically. Each has a 5000 mAh battery for up to 6 hours of warmth and can charge a phone over USB.

~~$43.5~~

5%$41.33

Price with code · Geekbuying · as of 2026-10-09

Code GKBMAY26 · 5% off

max $20 · until 2027-05-31

Copy code & shop Geekbuying

~~$43.5~~5%$41.33Copy code & shop Geekbuying

1Twin bodies that join and split

Snap the pair together to store as one, or split them to share with a friend. At 12.4 × 2.8 cm each, they slip into pockets or gloves.

2Up to 52 °C for up to 6 hours

They heat quickly to 126 °F (about 52 °C) even in the cold, and each lasts up to 6 hours. A control chip holds a steady temperature and guards against overcharge, overcurrent, overpower and short circuits.

3Power banks too

They recharge in 3.5 hours over 5 V/2 A USB-C and can top up a phone from the USB output. ABS and aluminium bodies have a lanyard hole.

Key specs

Battery: 5000 mAh × 2
Runtime: Up to 6 h each
Input/output: 5 V / 2 A
Weight: 135 g each
Ships from: EU warehouse

Good pick if

Your hands get cold on winter camps or commutes
You want warmers a couple or family can share

Think twice if

You want heated gloves that run all day

FAQ

Is there a promo code?

Yes. Enter GKBMAY26 at Geekbuying checkout when buying the Flashfish YZC04 Magnetic Rechargeable Hand Warmers, Set of 2 for 5% off. Conditions: max $20 · until 2027-05-31.

What’s in the box?

Two hand warmers, two lanyards, a USB-C charging cord and a manual.

How long does it take to charge?

About 3.5 hours on 5 V/2 A USB-C.