Bluetooth - Wirelessly connect up to 3 smartphones or tablets to the speaker and take turns playing powerful stereo sound. Built-in rechargeable Li-ion battery supports up to 20 hours of playtime and charges smartphones and tablets via USB. IPX7 Waterproof

AMAZING VIDEO QUALITY UP TO 660 FT AWAY: J-Tech Digital HDBitT Dual Antenna 1x2 HDMI Wireless Extender is the most powerful wireless HDMI extender on Amazon. It lets you extend an HDMI audio/video signal wirelessly up to 660 ft (200m) using latest technology. SUPPORTS TWO RECEIVERS AT SAME TIME: the transmitter can send video to two receivers, which is useful for broadcasting over 2 TVs. DUAL ANTENNA AND MORE STABLE TRANSMISSION: with implementation of the dual antenna design, the data rate has been greatly improved and thus more stable and fluent video. Note: Only One transmitter can work in the same place. 20-60 KHZ WIDE FREQUENCY IR CONTROL EXTENSION: Let's think about a scenario. If you have a DVD player in your media room and a TV in your living room, while you are in the living room, you can still use your DVD remote to control the DVD player.