The item in question is a whistle, made of ABS resin material. Its size measures approximately 49 x 20 x 13mm or 1.9 x 0.8 x 0.5 inches. The whistle is capable of producing frequencies ranging from 0 to 4000 Hz.

The package contents include the following items: 1 x Whistle 1 x Lanyard 1 x Mouthguard 1 x Storage Box, which is constructed from 100% Nylon.

The whistle's material composition is ABS resin, a type of thermoplastic known for its durability and versatility. ABS resin is widely used in the manufacturing of various products due to its excellent impact resistance, dimensional stability, and ease of processing.

Regarding the size of the whistle, it measures approximately 49 millimeters in length, 20 millimeters in width, and 13 millimeters in height. Translated to standard imperial units, this equates to around 1.9 inches in length, 0.8 inches in width, and 0.5 inches in height.

The frequency range of the whistle is specified as 0 to 4000 Hz. This means the whistle is capable of producing sounds within the audible frequency range for human hearing, which typically spans from 20 Hz to 20,000 Hz.

In addition to the whistle itself, the package includes a lanyard, a mouthguard, and a storage box. The lanyard can be used to attach the whistle to the user's clothing or gear, providing a convenient way to keep the whistle accessible. The mouthguard is likely included to help protect the user's teeth and lips when blowing the whistle. The storage box, made from 100% Nylon, offers a durable and protective enclosure to store the whistle when not in use.

Overall, this whistle appears to be a compact and versatile item, suitable for a variety of applications where a portable, high-frequency sound-producing device may be required. The inclusion of the additional accessories, such as the lanyard and storage box, further enhances the functionality and convenience of this product.

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