Gerbing's Womens S-3 Heated Winter Gloves Each Battery has 4 settings and is indicated on the battery by a set of red lights: 100% (4 red lights) 75% (3 red lights) 50% (2 red lights) 25% (1 red lights) The 7v battery holds anywhere from 2-8 hours of heat, depending on the setting: 2 hours at 100% 3 hours at 75% 5 hours at 50% 8 hours at 25% Nylon shell, tricot lining 2 Heated Gloves (1 pair) 2 Rechargeable Lithium-Ion Batteries 1 Dual Battery Charger Rechargeable