Specifications include, but are not limited to: Input Battery Voltage: 8 - 12 VDC Power Supply: 8 X AA Batteries Battery Life: 15 hours continuous use, typical settings (Defined as power on with screen on at 100% brightness, ADV sensor pinging 50% of the time, GPS off, and no sleep periods.) Power Consumption: 1 W (Average) GPS: H. Position Accuracy: Up to 2.5 m (8.2 ft) nominal (Ideal conditions and settings. GPS data are intended for approximate georeferencing and site ID) Frequency: L1 (1.575 MHz), SBAS compensation (WAAS, EGNOS, MSAS, GAGAN) LCD: Resolution: 320 X 240 TFT Transmissive Bluetooth Class 2, Range = 10 m (33 ft) nominal USB Micro USB, IP-67 Probe Interface: Battery Power to Probe: 8 - 12 VDC Data Transfer: RS-232 Data Storage: 16 GB. Up to 10k discharge measurements. Up to 10 million velocity samples. Operating Temperature: Alkaline Batteries: -20° to 45°C (-4°F to 113°F) NiMH: -20° to 50°C (-4°F to 122°F) Storage Temperature: -22° to 70°C (-22° F to 158°F)3 Physical Specifications: Waterproof Rating: IP-67 (1m submersible) Handheld Dimensions: (L)10.4 cm (4.1 in); (W) 6.4 cm (2.5 in); (H) 23.7cm (9.3 in) Weight in Air: 0.75 kg (1.65 lbs) Weight in Water: -0.25 kg (-0.55 lbs);