The H2essential is the only Handy Recorder with three internal microphones. With the ability to select different mic patterns, it gives creators more options than ever before. Mid-Side stereo pickup from the front and rear Pickup pattern selection: 120°, 90°, and MONO 32-bit float recording requires no gain adjustment 3.5mm stereo mini external mic/line input 3.5mm stereo mini line/headphone output Built-in speaker for quick preview Built-in Mixer for volume adjustments Color 1.3-inch LCD display Low-cut filter Accessibility for the visually impaired 32-bit float USB mic functionality for Win/Mac/iOS/Android Remote control from iOS app via BTA-1 Bluetooth connection Micro SDHC / micro SDXC cards up to 2TB supported Powered by 2 AA batteries, AC adapter, or USB mobile battery 11 hours of operation with 2 AA alkaline batteries