EarfiTune V2's IPX8 rating allows safe use during recreational diving and all swimming activities. The waterproof protection handles complete submersion, making it suitable for pool training, snorkeling, and most water sports without compromising performance.

Bone conduction transmits sound through vibrations on your cheekbones rather than through your ear canal. This technology allows EarfiTune V2 to deliver clear audio underwater while keeping your ears open for environmental awareness and safety.

Yes, the ergonomic design and secure-fit construction ensure EarfiTune V2 stays firmly in place during vigorous activities. The lightweight design and adjustable fit accommodate various head sizes while maintaining stability throughout intense movements.

Bluetooth signals don't transmit well underwater, so we recommend using the integrated 32GB MP3 player mode for swimming. Use Bluetooth connectivity for dry-land activities like running, cycling, or gym workouts for optimal performance.

EarfiTune V2 fully charges in approximately 2 hours using the included USB charging cable. The quick-charge feature provides 2 hours of playback from just 15 minutes of charging for emergency situations.

The 32GB storage holds approximately 8,000 songs in standard MP3 format, providing ample space for extensive playlists. This capacity ensures you'll have plenty of variety for months of workouts without repetition.

Absolutely! EarfiTune V2 excels in various activities including running, cycling, hiking, and gym workouts. The versatile design and dual connectivity options make it perfect for any active lifestyle, not just aquatic sports.

Rinse EarfiTune V2 with fresh water after saltwater exposure and dry with a soft cloth. The durable construction resists corrosion, but regular cleaning extends lifespan and maintains optimal performance for years of reliable use.