Magnetic & PortableUT3 Lite features built-in magnets that snap two warmers together into a compact, gift-ready design for men and women. Ultra Light & SlimAt just 1.8cm thin and 40% lighter than a phone, it slips easily into pockets or even gloves. Instant Heat, Lasting WarmthHeats up in 5 seconds with three adjustable levels up to 125, keeping you cozy for 4-8 hours. Safe & DurableUL certified with smart temperature control, dust-resistant USB cover, ergonomic one-button operation, and silicone wrist strap. Perfect Tech GiftIdeal for camping, hiking, skiing, golfing, or simply keeping cold hands warm - even for those with Raynaud&';s.