You don't need Bluetooth headphones here, since there's a 3.5 mm headphone jack. Don't worry if the phone gets a bit wet, it has an IP 68 rating.
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Ulefone Armor 17 Pro Rugged phone 120Hz 108MP Android 12 Night Vision Helio G99 8GB 256GB Mobile Phones NFC Smartphone Global
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Ulefone Armor 17 Pro 8GB+256GB Rugged Phone 6.58 inch Android12