Two-piece design models including the Omega™ include a 30 day manufacturer defect guarantee. All Omega™ parts are intended for use with other Smart Smoke Omega™ parts and accessories only. Battery life per charge and lifetime span depend upon usage and maintenance; figures given are approximate and are based upon the average pack-a-day smoker. All Omega™ batteries are available with a green LED indicator light only. Approximate time to re-charge is 3 hours.