A breakthrough in miniaturization, this palm-sized Omron Vibrating Mesh Technology (V.M.T.) nebulizer offers you the freedom to take a treatment where and whenever you need while delivering medication effectively and faster than nebulizers / compressors ten times its size. Powered by two "AA" batteries, eliminating the need for recharging, the MicroAir is a one-piece unit so it does not require a separate medication cup and tubing. A single button enables continuous flow or on-command flow. Even works when held at any angle. Comes complete with carrying case, mouthpiece, mesh cap, mouthpiece attachment, instructional video and A/C adapter for use with household current. It is an amazing 4" H x 2" D x 1" W and weighs only 3.4 oz. Two-year manufacturer's warranty. Manufacturer's $20 Rebate Coupon provided with your order.