Microlab MD215 NFC Portable Wireless Bluetooth Speaker (Gold) Bluetooth 4.0 Sound bar with NFC, new NFC function built for iPhone 6 & Smartphones, Bluetooth Wireless Technology for cordless music playbacks Built in Microphone, 1.5" speaker drivers and built-in amplifier Top LED Control Panel Portable and compact Speaker system, Premium Stereo Sound Quality with Bass Enhance 7Watts High Power, Featuring 2 general range speaker drivers with clear sound Black/White & Gold Metal/White 2 options available, great design by Micro lab Rechargeable battery for prolong use, 10hours music play time, 24hours standby time, Lithium battery: 3.7V 1800 mA, it comes with built-in lithium battery that can be recharged overnight