Holux M-241

Specifications: ' 32 parallel satellite searching channels ' Receiver: L1, 1575.42 MHz ' Frequency: 1.023 MHz ' Update frequency: 1 Hz. ' Antenna type: Built-in ' Satellite signal reception sensitivity: -159dBm ' Dimensions: 32.1mm X 30mm X 74.5mm ' Weight ( excluding battery) : < 39g. ' Switch: Slider switch ' 1 AA alkaline battery lasts for up to 12 hours of operation ' Operating temperature: 0  to + 50  ' Storage temperature: -10  to + 60  ' Operating humidity: 5% to 90% Positioning ' Non DGPS ( Differential GPS)  ' Position : 3.0 M CEP excluding SA ' Velocity: 0.1M / sec. ' Interval: 0.1 sec to Sync GPS ' DGPS ( EGNOS/ WAAS/ MSAS)  ' Position: < 2.2 M., Horizontal deviation 95% time < 5 M., Vertical deviation 95 % time * The above data is based on the specifications of the MTK GPS chip Positioning Timing ' Time to reposition < 0.1 sec average ' Hot boot 1 sec ' Warm boot 33 sec ' Cold boot 36 sec * The above data are based on specifications of the MTK GPS chip Physical Specifications ' Sea level: Max 18, 000 M ( 60, 000 feet) ' Velocity: Max 515 M./ sec ( 1000 knots) ' Acceleration: Max 4G ' Vibration: 20 M/ second3, Max. Buttons ' 1 Power switch, 2 Buttons ( Menu and Confirm) LCD display page ' System and satellite positioning status ' Time ' Position ' Velocity ' Distance measurement ' Setup