Sicneka Fashion Outdoor Protable Waterproof Stereo Wireless Bluetooth 4.0 Speaker Subwoofer With Built in Mic/3600mAh Power Bank/NFC Function Handsfree Call (Red) Bluetooth V4.0 Waterproof+NFC Speaker+Power Bank,Waterproof,Dustproof, Anti-scratch, Shockproof,High temperature Resistant Speaker NFC Technology (Near Field Communication) for easy and instant pairing, HiFi and clear loud sound output Built in microphone allows you to answer calls while listening to music, IPX4 Grade Waterproof, excellent for Outdoor Sport and exercise and Travel Waterproof,Dustproof, Anti-scratch, Shockproof,High temperature Resistant Speaker, Stylish and exquisite appearance, which is convenient to carry, With it you can enjoy music anytime and anywhere English Voice Prompt function,Used as 3600MAH power bank can charge your phone or other device in emergency