Naenka Runner Diver key specsWaterproof standard: IPX8Battery life: 10 hoursStorage: 16GBAudio formats: MP3 and FLACWeight: 33gTwo-minute reviewThe Naenka Runner Diver waterproof headphones are unique among the best waterproof headphones and best bone conduction headphones.  Like most underwater audio gadgets they can store a bunch of MP3 files (remember them?) so you can listen to music, podcasts or audiobooks while you swim.  However, they have something most rivals don’t in the shape of a Bluetooth module.
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