$1.06 each
High-Decibel Sound
Model P-38 Plastic Whistle
The best and brightest sound around.
Used internationally by professional referees, coaches, dog trainers, teachers, sports enthusiasts, and people seeking a personal safety sounding device, the P-38 is built for a clear, dependable signal.

Direct ordering
Item #6 direct pricing
$1.00 each
Any quantity, any available color. No minimum order.
Call 815-475-6504 to orderProduct details
The best and brightest sound around.
The patented P-38 whistle is made from high-impact, shatterproof ABS plastic and ultrasonically welded for maximum strength.
Every standard P-38 includes a stainless steel split ring and cork ball. Sixteen body colors and sixteen cap colors can be mixed into 256 solid and two-tone combinations.
The body-and-cap construction also makes the P-38 ideal for custom programs, with logos, slogans, company names, or product names molded directly into the cap.
Product features
What to know
- High-impact shatterproof ABS plastic body
- Ultrasonically welded construction
- Specially designed cork ball from Portugal
- Optional stainless steel split ring
- 16 body colors, 16 cap colors, and 256 combinations
- Custom molded cap imprinting available for additional fee
Applications
Common uses
- Referees and sports officials
- Coaches and teachers
- Dog trainers
- Lifeguards and aquatic safety
- Boating and marine safety
- Industrial and emergency signaling
- Personal safety signaling
- Custom branded programs
Product gallery
Model P-38 Plastic Whistle in detail.
Click any photograph to open the full-size original image.
Colors and ordering
Sixteen body colors. Sixteen cap colors. 256 combinations.
Choose a solid whistle color or mix any body color with any cap color. The product images below show our full core range of athletic, safety, and organization solid color options.
Complete color chart
See every P-38 body and cap combination.
Sixteen body colors and sixteen molded cap colors create 256 combinations. Use the chart to compare every pairing, then click it to open the full-resolution catalog.
Open the full-size 256-combination chartCustom molded whistle caps
Put your mark directly into the P-38 cap.
Custom imprinted whistle caps can carry a logo, slogan, company name, or product name molded into the cap.
- One-time $400.00 engraving charge for the special mold slugs
- First order minimum of 1,400 caps in one cap color
- Typical initial production time of 4 to 6 weeks after artwork is supplied
- Choose any available cap color with any available body color
- After inventory is established, order as many or as few finished custom whistles as needed


Also available - Item #7
P-38 Finger Grip Plastic Whistle
The finger-grip P-38 has the same quality construction and color choices as the standard whistle. Its grip is fully adjustable: dip the grip parts into very hot water for 15 to 20 seconds, then shape them to fit the fingers.
- Official referee-style P-38 whistle
- Fully adjustable finger grip
- Available in the all 256 colors of the P-38 solid and two-tone color range
- Call for colors currently in stock
- A minimum order for currently out-of-stock body colors may apply
Direct ordering
Item #7 direct pricing
$1.06 each
$1.00 each
Any quantity, any available color. No minimum order.
Call 815-475-6504 to orderFrom the company archive
Original P-38 packaging and retail presentation.
Retail cards and labeled poly-bag packaging dated 1975 and 1979 preserve the early P-38 identity, including the Seron Whistles mark, Item #33 green designation, and the “Best Sound Around” message.

Patents and product lineage
A product line built from decades of practical invention.
This product family is part of the company's long-running patent history. The designs have been refined over decades, but the promise stays the same: dependable American-made goods, built carefully without overseas shortcuts.
Plastic whistle
US-4359961-A by Suren V. Seron. A plastic whistle patent tied to the P-38's durable high-impact body and ultrasonic-welded construction.
Multiple tone whistle
US-5251569-A by Suren V. Seron. A whistle patent showing the company's continued sound-product engineering beyond the original plastic P-38 format.
Whistle with tone changing rotator
US-5495820-A by Suren V. Seron. A tone-changing whistle patent from Suren V. Seron, extending the family's whistle innovation record.
More from Seron Mfg. Co.
Seron product pages
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