T&G TG113 Portable Bluetooth Speakers Waterproof Stereo Outdoor Loudspeaker MP3 Bass Sound Box with FM Radio(Gray) Filter-Memory Stick Card The effective trigger distance is

The effective trigger distance is about: 0-50mm

It can be used for DVD audio connection/PS4 game console connection/optical fiber modem connection

and easy to dissipate heat from laptop

and does not take up space at home

8) Built-in transient protection

T&G TG113 Portable Bluetooth Speakers Waterproof Stereo Outdoor Loudspeaker MP3 Bass Sound Box with FM Radio(Gray) Filter-Memory Stick Card The effective trigger distance isProduct Specification 1. Support A2DP,AVRCP, Handsfree profile,FM radio 2. With FM function, can search radio station broadcast automatically 3. International advanced Wireless chip and circuit design techniques,support all wireless devices. 4. With Hi Fi speaker, to make sure the clear and bright sound. 5. Support Micro SD card and USB card, play MP3 format audio. 6. The wireless working distanceis 10 meters. 7. With AUX line in, can directly connect