1. Product Overview
The Royaltenic S31 is a versatile 4-in-1 device combining a Bluetooth speaker, wireless charger, LED alarm clock, and FM radio. It offers multiple audio playback options and convenient features for your desktop or bedside.

Figure 1: Product Features Overview
This image displays the black version of the speaker with a smartphone wirelessly charging on top. Key features highlighted are: Dual alarm clock design, Bluetooth audio, Hands-free calls, Brightness adjustment, and Wireless fast charging.
Package Contents
- Royaltenic S31 Bluetooth Speaker
- USB Type-C Charging Cable
- AUX Audio Cable
- User Manual
2. Controls and Ports
Familiarize yourself with the device's buttons, knob, and ports for optimal use.
Front/Top Panel Controls
- Sleep Mode Button: Long press to enter sleep mode.
- Play/Pause / Sleep Music Select Button: Short press to play/pause. In sleep mode, press to select sleep music. Double-click to play sleep music in a loop.
- Previous Track / Volume Down Button: Short press for previous track. Long press to decrease volume.
- Next Track / Volume Up Button: Short press for next track. Long press to increase volume.
- Mode Switch Button (M): Short press to switch between Bluetooth, FM Radio, USB, and AUX modes.
- Alarm 1 Set Button: Used to set Alarm 1.
- Alarm 2 Set Button: Used to set Alarm 2.
- Time Set Button: Used to set the current time.
- Knob (Encoder): Rotate to adjust volume. Double-click to adjust LCD brightness.
- Wireless Charging Pad: Place compatible devices here for wireless charging.
Rear Panel Ports

Figure 2: Rear Panel Ports
This image shows the rear of the speaker, detailing the available input/output ports.
- ON/OFF Switch: Power switch for the device.
- DC 5V (Type-C) Port: Connect the USB Type-C charging cable here to power the device.
- USB Port: For USB flash drive playback.
- TF Card Slot: For TF (MicroSD) card playback.
- AUX Slot: For connecting external audio devices via the AUX cable.
3. Setup
3.1 Powering On
- Connect the provided USB Type-C cable to the DC 5V port on the rear of the speaker and the other end to a USB power adapter (not included).
- Flip the ON/OFF switch on the rear panel to the 'ON' position.
- The display will light up, typically showing