S2 waterproof wireless headphones let you easily and quickly sync smartphones, tablets and other music devices. Bluetooth 5.0 with advanced audio decoding technology provides wireless connectivity to your smartphone or other Bluetooth devices. Ultra small earphones with high sound quality. Sleek and innovative portable charging system in aluminum casing. 2 in 1 Bluetooth headset and charger. High quality, modern design and three colorful colors. Special technology reduces external noise, which allows you to clearly hear the sound of the speaker.