Plantronics Backbeat Sense SE - Special Edition Bluetooth Wireless Headphones with Splashproof Coating - Gray WIRELESS: Class 1 Bluetooth 4.0 technology that will stream up to 330 ft. from Class 1 Bluetooth devices, which is perfect for iPhone, iPad and other smart devices. SMART SOUND: Headphones packed with smart sensors for audio control and power management and to maximize wireless listening time. COMFORT: Pillow-soft, memory foam cushions give these special edition headphones the comfort to where all day. SPLASHPROOF COATING: P2i coating technology for water resistance. BATTERY LIFE: Rechargeable battery that will last up to 18 hours of wireless listening and 21 days of standby time.