This pocket whistle weighs only 1.76g and is designed for a maximum sound level of +120dB. It's compact and can be easily attached to a keychain.

Key Features:

• +120dB
• 1.76g
• Fast printing (less than 15 minutes)
• Can be attached to a keychain

If you encounter any problems, please let me know in the comments so I can find a solution.

And if you like this model, feel free to leave a comment.