Brand: SILVER CREST
Category: Audio
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for STSK A4 B2
Uploaded: Nov. 21, 2025, 8:52 p.m.
Warranty Information
3-year warranty from the date of purchase for material or manufacturing defects.
Charging the Lade-/Aufbewahrungsbox (Charging/Storage Box):
Before first use, charge the battery of the charging/storage box.
Via USB:
Connect the charging/storage box 7 via the USB-C charging port 14 and the supplied USB cable 15 to a USB power source with at least 500 mA output (e.g., a USB charger or computer).
Wireless Charging:
Place the charging/storage box 7 with the Qi receiving area 16 on your Qi charger.
Charging begins automatically when the wireless Qi charger is switched on.
When charging is complete, the status indicators (charging/storage box) 10 light up.
Charging the Earphones:
The earphones must also be charged before first use.
The earphones 1 and the charging/storage box 7 can be charged simultaneously.
Insert the earphones into the charging ports 8 of the charging/storage box 7. Charging starts automatically.
Operation:
Charging/Storage Box:
The charging of the earphones 1 starts automatically when at least one earphone is inserted into a charging port 8.
Earphones:
Turning On: Open the cover of the charging/storage box 7 and take the earphones out of the charging ports 8.
Turning Off: Insert the earphones into the charging ports 8 and close the top cover of the charging/storage box 7.
Pairing Earphones: To hear stereo sound, the earphones must be paired. They pair automatically when removed from the charging ports 8.
Pairing with a Bluetooth Device: Open the lid of the charging/storage box 7. The LED indicator 4 on the master earphone flashes red/white, and the LED indicator on the slave earphone flashes white.
Search for "STSK A4 B2" on your Bluetooth playback device and pair.
Troubleshooting and error codes
| Problem | Possible Cause | Action |
|---|---|---|
| No Function | Rechargeable battery empty. | Charge the rechargeable battery in the charging/storage box. |
| No Bluetooth Connection | Error operating the earphones. | Switch the earphones off and on again. |
| Bluetooth device error. | Disconnect and reconnect the earphones. Check if the earphones work with another Bluetooth device. | |
| Bluetooth connection error. | Move closer to the Bluetooth-connected device. | |
| No Sound | Bluetooth device error. | Turn up the volume on the playback device. |
| Bluetooth connection error. | Move closer to the Bluetooth-connected device. Disconnect and reconnect the Bluetooth device. | |
| Not all functions are available. | Bluetooth device error. Check if the Bluetooth device supports all functions. | |
| Wireless Qi Charging of the charging/storage box 7 does not start. | Charging/storage box 7 became warm due to charging. | Remove the charging/storage box 7 from the Qi charging surface to cool down. Check the product for damage. |
| The product is in an area with strong radio waves or noise (e.g., TV towers, power plants, gas stations). | Use other charging ports (e.g., USB Type C) for the charging/storage box 7 in such environments. | |
| Wireless charging does not start. | Charging/storage box 7 is not centered on the Qi marking on the wireless Qi charger. | Ensure the charging/storage box 7 is placed in the correct position in the center of the wireless Qi charger. |
| Other objects are on the Qi receiving area 16. | Check that no other objects are on the Qi receiving area 16. | |
| Wireless charging speed is slow. | The wireless Qi receiving area 16 is too far from the center of the wireless Qi charging surface. | Ensure the wireless Qi receiving area 16 is placed in the correct position in the center of the wireless Qi charger. |
| Charging does not start, even though the product is placed in the charging area. | The product is not positioned correctly. | Place the product in the center of the charging surface. Read the operating instructions for the wireless Qi charger. |