BNSD Power SM-01 Precision Multi-function Speedometer with LCD Screen ReviewbP PP NSD Power SM-01 Precision Multi-function Speedometer with LCD Screen PPATENTED design ONLY for original NSD SpinnersPDisplays 5 different statisticsPDigital LCD displayPPrecision speed sensor; certified for the monthly Top Speed ContestPBattery rated to last 2 years and quality test for durabilityP