Portable Bluetooth Speaker Portable Sound System 5W Stereo Music Surround Waterproof Outdoor Speaker Tag-Fingerprint Ring This digital-to-analog audio converter can

This digital-to-analog audio converter can be used for home or professional audio switching

Supported system: Windows / Mac / Linux

alarm probe

Built-in keys

Portable Bluetooth Speaker Portable Sound System 5W Stereo Music Surround Waterproof Outdoor Speaker Tag-Fingerprint Ring This digital-to-analog audio converter canSpeaker: Double Speakers 4 5W diameter 55mm FM Frequency Range: 87. 5 108MHz Frequency Response: 100Hz 20KHz Battery: 3. 7V 1200mAh Lithium Battery Charging Interface: Micro USB Input Voltage: DC 5V 500mAh SiZE: 8. 5*8. 5*10. 8CM packing Size: 9. 5 x 9. 5 x 12cm N. G: 400G MEAS: 47*39*39CM QTY: 60PCS G. W: 24KG Instructions: 1. Press and hold the ? button to increase the volume short press 2. Press and hold the " " button to decrease the volume short