No. More than 90% of commercial speakers have a paper screen that cannot be waterproof, but all passive Dynapro bands are resistant to water and moisture, but not waterproof.
Yes, all Dynapro active and portable bands have Bluetooth.
All batteries have useful life and health percentage, in the best health conditions, the internal battery can work for up to 8 hours without recharging.
The best cable for audio devices, regardless of the type of its coating, which is more commercial, is a cable that is sprayed and its material is pure copper.
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