Used only a few times for swimming. It has power, and the sound is great when you turn up the volume, with a deep bass that makes your ears tingle! Wearing earplugs and bone conduction headphones increases the immersion and makes the sound even better. For bulk purchases, I will discount all items after the second one by 100 yen, so I will adjust the price if you request a bulk purchase♪ 　3 items together >> 200 yen off the total 　10 items together >> 900 yen off the total, etc. I am selling at a low price, so further discounts are often difficult, but I will offer further discounts if you pick up in Ikebukuro, Tokyo, Nishi-Funabashi or Makuhari in Chiba, or Kujukuri, or if you purchase multiple items or combine them with other products, so please comment before purchasing. I will also offer discounts for bulk purchases with the following colleagues' and shop accounts. https://jp.mercari.com/user/profile/881481801 https://jp.mercari.com/user/profile/664097035 https://mercari-shops.com/shops/DjT4hJTNKm5Se6nFVAqkyc Please be sure to read the profile before purchasing♪ I have many items for sale! Please click below #HKファニチャー #HKサーフィン