[SPA3809][Phone Stand] Philips Speaker Bluetooth 5.3 USB Dual Connection Methods Strip ShapePhilips SPA3809 Speaker Bluetooth5. 3 USB Dual Connection Methods Function: 1. Digital clock, Bluetooth connection to synchronize time 2. Knob control with indicator light guidance, rotate to adjust volume, press to switch Bluetooth sound card mode3. Bluetooth 5. 3 USB dual connection methods Fuction: Bracket function, can hold mobile phones and tablets, freeing hands and keeping the desktop tidy Wooden box body effectively reduces box resonance and