The 210.5 plastic dog whistle from ACME is iconic amongst dog whistles. Maintaining its strong standard sound in all kinds of weather ensures that your dog will always hear you.
210.5 - this is a very easy to blow whistle and produces a single high pitch suitable for all dogs. This whistle is suitable for older and hard of hearing dogs and is perfect for close training. The 210.5 is often the choice of Spaniel owners with a frequency of 5900 Hz with a variation on blowing of +/- 20%