Nou in cutie Crystal Clear SoundAIKELA wireless earphones have the built-in high-quality audio chip, you can enjoy your music at anytime. It delivers deep bass and crystal clear highs, provide you the original quality of the music 120H Playtime in TotalThe 3500mAh charging case gives 30 times charge, providing about 120 hours of play ( Up to 4 hours' playtime on a single charge ). You can take it out while traveling or work trip One-Step PairingYou just need to search and connect by phone Bluetooth at first time. Then just take earbuds out from charging case, they can be connect automatically to your phones IPX7 WaterproofThis wireless headphones has IPX7-rated protection against sweat and rain. They are perfect for the gym, running and exercising (not for swimming)