Heat that lasts for 15+ hours. 5s is equipped with a power bank with a capacity of 10000mAh, leading in a 20% improvement in energy density and minor weight increases. It can deliver heat for up to 15 hours. Accompany you throughout the day.
Faster Heat. Larger surface. Feel a comfortable warmth like you've never felt before. The U5s features a uni-body high grade brushed aluminum casing with a 30% bigger heat surface than previous. Spread the ideal warmth from your palm to your fingertips. You can always have your comfortable heat with four temperature ranges ranging from 145°F to pick from.
Your must-have gadget for every season. During the summer, remove the Union case and use the Union core as a 10000 mAh USB-C portable charger. U5s is both a hand warmer and a portable power source!
