They have already sold over 1000 so it appears to be popular..
(info from them)
A neat and compact 50 feet flat hose with wind-up reel - to ensure it meets the needs of all kinds of flowers and vegetation, this recoil hose comes complete with seven different spray settings.
Spray gun settings include:
Full - powerful jet with maximum amount of water released
Flat - gives a horizontal spay to spread water over a greater area; ideal for watering
Mist - a light spray ideal for watering fragile plants
Shower - perfect for watering
Jet - powerful spray
Cone - releases water in a cone shape
Centre - sprays through the centre of the gun