Mono Portable Speaker Denver BTS-51 Black

The DENVER Mono Portable Speaker BTS-51 in black is a compact, battery-powered mono speaker for wireless music playback. It connects via Bluetooth to smartphones or PCs within an 8–10 meter range and delivers single-channel audio from a 1-way speaker design. The speaker is splash-resistant (IPX4), making it suitable for use in bathrooms or outdoors, and runs on four AA batteries (not included).

Advantages

Bluetooth pairing offers cable-free playback from mobile devices and computers. The IPX4 splash-proof rating provides protection against water splashes for safer use near sinks and outdoors. Battery power (4 × AA) allows portable operation without the need for an external power supply. The compact black design is easy to place and transport.

Suitable for

• Listening to music in small rooms and bathrooms
• Portable audio for outdoor activities like picnics
• Basic background sound for small gatherings
• Use with smartphones, tablets and Bluetooth-enabled PCs

Key specifications

• Model: Denver BTS-51
• Audio channels: Mono (1.0)
• Speaker type: 1-way
• Wireless connection: Bluetooth, range 8–10 m
• Ingress protection: IPX4 (splash resistant)
• Power source: 4 × AA batteries (not included)
• Colour: Black
• Weight: 0.328 kg

How to use

Install four AA batteries into the battery compartment. Turn on the speaker and enable Bluetooth on your smartphone or PC. Search for available devices, select “DENVER BTS-51” to pair, and start playback from your chosen app or media player. Adjust the volume from the speaker or the connected device as needed. After use, power off the speaker and remove batteries if storing for an extended period.

Recommendations

To prolong battery life, lower playback volume when possible and switch the speaker off when not in use. Avoid direct exposure to heavy rain or submersion despite the IPX4 splash resistance.