iNACU NFC enabled easy Pairing Wireless Waterproof IPX5 Portable Bluetooth Speaker 5Wx2 18 cores HiFi Aluminum Durable Uni-Body 1800mAh 8-12 Hrs Hands free call with echo cancellation (RED) High quality, Hi-Fi with 5wx2 18 core speakers Hands free call with acoustic echo cancellation technology IPX5 water proof level Build in 1800mAh PLB, 8-12 hours nonstop happy time NFC technology for easy pairing with any NFC ready bluetooth devices