Echo CCS-58V4AH 16 in. 58 Volt Lithium-Ion Brushless Cordless Chain Saw Brushless motor for superior power, run time and durability 16 in. bar and chain for larger, more aggressive cutting Automatic oiler for optimum oiling and longer chain life Includes 58-Volt 4.0 Ah lithium-ion battery and 58-Volt lithium-ion charger Equipped with an inertia chain brake