The Zoom H4N Handy Portable Digital Recorder requires 2 AA batteries (included) and is not discontinued by the manufacturer. It has dimensions of 7.29 x 15.62 x 3.51 cm and weighs 281.23 g. The manufacturer is Zoom and the ASIN is B001QWBM62. The item model number is H4N. The recorder features a built-in X/Y stereo mic that can record at either 90 or 120 degrees, four channel simultaneous recording, a high-quality mic preamp for improved audio quality, a large 1.9-inch LCD screen, and 24bit/96kHz Linear PCM recording capabilities.