We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two slim black rechargeable hand warmers with rounded edges

NewAir Lerat M357 Rechargeable Hand Warmer 2 Pack Black

SKU CH-G8KR-6YMTE MPN M357

A pair of rechargeable pocket heaters reaching 131 °F with three heat levels and up to six hours of warmth

  • Product nameLerat M357
  • Power sourcePropane
  • Heat capacity131 degrees fahrenheit
  • Team affiliation1 Piece
  • Key featuresBattery Powered, Rechargeable, false, Acrylonitrile Butadien
  • Surface finishBlack
  • UL certified with safety chip for protected 360° warmth
  • Three heat levels reach 131 °F in seconds for fast relief
  • Up to 6 hours runtime per charge for all-day comfort
  • Slim 3.26 in design at 0.18 lb slips into any pocket
  • Two-pack gift set ready for winter sports and daily use

Two-Pack Pocket Heaters

The NewAir Lerat M357 ships as a matched pair of rechargeable hand warmers finished in black. Each unit fits in a pocket or can be tucked into gloves, hats or tights for 360-degree warmth. They are aimed at commuters, golfers, campers and anyone managing cold hands from Raynaud's or arthritis who wants instant heat without disposable packets.

Sustained Heat Output

Three selectable levels push the surface temperature to 131 degrees_fahrenheit and hold it for up to six hours on a full charge. The safety temperature control chip monitors output continuously to prevent overheating during extended sessions. UL certification confirms the protection circuitry meets recognised safety standards for battery-powered heating devices.

Thermals and Power Draw

Each warmer weighs 0.15 kilograms and measures 3.26 inches, roughly 30 percent lighter than traditional models. The slim ABS shell stays comfortable against skin while the internal battery delivers consistent power across the chosen level. A dual USB-C cable charges both units simultaneously, and the maker recommends a top-up every three months during storage to preserve cell health.

How it compares

Measured against everything we stock in Patio Heaters & Fire Pits, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 98% of the 117 comparable items (median $413.99).

Specifications

Product
Brand nameNewAir
Model nameM357
Part numberM357
Product nameLerat M357
Power
Power sourcePropane
Size & build
Surface finishBlack
Product dimensions20'
Product weight0.15 kg
More details
Heat capacity131 degrees fahrenheit
Team affiliation1 Piece

Questions about this item

Does the M357 hand warmer get too hot to hold after running at 131 degrees Fahrenheit all day?

The UL certified unit has a safety temperature control chip that continuously monitors heat to prevent overheating, providing 360° warmth without becoming unsafe to touch during extended use.

What charging cable do I need to already own to recharge the 2 pack hand warmers?

A dual USB-C cable is included in the box, so no extra cable is required to charge both units from any standard USB power source.

Will the M357 fit inside my older winter gloves that have tight cuffs?

Each warmer measures 3.26 inches and weighs only 0.18 lb, making them slim and light enough to slip discreetly into most gloves, hats, or pockets without bulk.

More in Patio Heaters & Fire Pits

Similar items