H2O Audio Waterproof Bluetooth Wireless Headphones $29 + Delivery ($0 with Prime/ $39 Spend) @ H2O Audio via Amazon AU

CRYSTAL CLEAR SOUND: H2O Audio Surge Bluetooth Wireless Headphones feature the advanced CSR8645 chip, with Bluetooth 4.1 with aptX audio giving these wireless earbuds unparalleled stereo sound quality. Never miss a call. The waterproof microphone enables you to have handsfree calls even when surfing or paddling.
WATERPROOF and SWEAT-PROOF: H2O Audio technology ensures these headphones can withstand heavy perspiration, and complete submersion underwater. Patented waterproof technology combined with hydrophobic Nano Coating provides these earbuds a waterproof rating of IPX7, making these earphones the best choice for all types of exercise like running, surfing, stand-up paddling and water sports activities. NOTE: Bluetooth does not work under water.
SMART WATCH and SMART PHONE BLUETOOTH: Smart watch compatible: Download music to your smart watch and pair Surge BT with Apple Watch, Samsung S3 or Garmin Forerunner 645 Music. Leave your phone at home and enjoy weightless music. Or simply connect with your Smart Phone. Compatible with all Bluetooth-enabled mobile devices such as iPhone XS, X, 8, 7 SE 6 6Plus, Samsung Galaxy S7 / Edge, Google Pixel, iPad, etc.
THE PERFECT FIT: The in-ear headphone included multi-size ear-tips and ear-fins providing a sturdy and comfortable hold. They are also lightweight providing all day comfort. Unlike many other Bluetooth headphones, SURGE BT headphones have minimal weight at the earbuds which makes them stay in your ears better.
LONGER BATTERY LIFE: With over 8 hours of battery life, 200 standby hours and a fast 2 hour charge time. You can enjoy listening to your favorite music longer or be on a business call while multi-tasking. 100% Guarantee H2O Audio warrants all its products to be free of defects of material and workmanship for a period of one (1) year from the date of shipment.