28g, Impeller (must point directly into wind). Compact & Waterproof. Measures kmh, mph, mps, knots and fps. Balanced instant wind speed and maximum wind speed. Replaceable lithium battery.

95g, omni-directional 3-D cups (measures wind from any angle). Floats, water resistant. Tripod mountable. Instant, max and average speed, beaufort bar graph. Large display, replaceable lithium battery. Measures mph, kmh, fps, and knots. Supplied with soft case.