Flashfish YZC04 2-in1 Magnetic Hand Warmers, LED Real-time Display, 3.5H Fast Charge, 5000mAh*2, Compact & Portable

Lightweight with only 135g of each unit, it features a pocket-friendly compact design. Heats up instantly to 126°F with a 95.98% thermal conversion rate. Dual 5000mAh large-capacity batteries deliver long-lasting warmth and support 3.5-hour fast bidirectional charging. Works as both a hand warmer and a USB power bank for emergency charging. Premium temperature control chip, comes with four-layer protection. Detachable twin units can be used separately, perfect for sharing.