Specifications include, but are not limited to: Recording Format 16-bit PCM .wav files Channels 1 built-in (2 with optional second microphone) Sample Rates The recorder supports the following sample rates in samples per second on one or two channels: 8000, 12000, 16000, 22050, 24000, 32000, 44100, 48000, 96000 Built-in Microphone Directional Characteristic: Omni-Directional Power Options 4 or 8 AA Alkaline/rechargeable NiMH batteries Run-Time 8 AA Alkaline: up to 625 hours (using low-power mode at 24kHz mono) Storage 1 SDHC/SDXC flash card slots (Class 4 or greater) Supports up to 1TB SDXC cards (will support 2TB SDXC if/when available) Dimensions Height: 4.7" / 120 mm Width: 7.0" / 177 mm Depth: 1.6" / 40 mm Weight Without batteries: 0.54 lb / 245g With 8 AA batteries: 0.95 lb / 429g Enclosure Material IP67-rated Polycarbonate Housing Enclosure Environmental Protection Fully weatherproof with integrated humidity controls Operating Temperature -4°F to +185°F or -20°C to 85°C Warranty: 2 years