The Frabill Recharge Deluxe Aerator was designed to keep your catch alive and healthy. Whisper quiet while operating, the Frabill Recharge Deluxe Aerator has three modes of operation: low, high, and intermittent. Fitted with a rechargeable lithium battery, the Frabill Recharge Deluxe Aerator completely eliminates the need for single-use batteries. Complete with a deluxe size air stone, the Frabill Recharge Deluxe Aerator provides efficient, rechargeable performance that will keep your catch in top condition. Features: -Rechargeable lithium ion battery-Deluxe air stone-Three running modes: low, high, intermittent-Anti-backflow valve