Panasonic EYC140B11 14.4-Volt Lithium Ion Impact Driver/Drill Driver Combo Kit 14.4-volt cordless drill/driver and impact driver kit; lithium-ion technology provides more power, less weight, longer run times, and cooler operation Impact driver delivers 1,330-inches-per-pound of power with 3 speeds; drill/driver delivers 390-inches-per-pound of power Electronic performance monitoring system delivers safe lithium-ion performance even under heavy loads Includes 2 batteries, charger, and carrying case Impact driver weighs just 3.1-pounds; drill/driver weighs 3.5-pounds; both are covered by a 1-year limited warranty