Mono Portable Speaker Denver BTL-350 Black

The Denver BTL-350 Black is a compact mono portable speaker designed for simple, on-the-go audio playback. It delivers 5 W RMS of rated power through a single 4 cm driver, providing clear sound for personal listening in small spaces. Wireless Bluetooth connectivity allows pairing with phones, tablets and other devices at ranges up to 10 metres, and the speaker also supports MP3 files from MicroSD cards for offline playback. The speaker's black finish and lightweight 0.61 kg construction make it easy to carry and integrate into a variety of environments.

Advantages

The speaker combines Bluetooth wireless streaming with direct MicroSD playback for flexible audio sources. Its 5 W RMS output and 4 cm driver provide balanced mono sound suitable for spoken word, podcasts and background music. With a range of up to 10 metres and compact dimensions, the device is convenient for travel and casual use. The single-unit design and 0.61 kg weight support easy transport and quick setup.

Suitable for

• Listening to music and podcasts at home or in small rooms
• Portable audio for travel or outdoor small gatherings
• Playback from mobile devices via Bluetooth within a 10 m range
• Offline playback from MicroSD cards containing MP3 files

Key specifications

• Rated power: 5 W RMS
• Driver size: 4 cm
• Audio channels: mono (single speaker)
• Wireless connectivity: Bluetooth, range up to 10 metres
• Supported audio format: MP3
• Media support: MicroSD card playback
• Weight: 0.61 kg
• Colour: Black

How to use

Charge the speaker according to the included instructions before first use. To play audio via Bluetooth, enable Bluetooth on your source device, scan for available devices and select the Denver BTL-350 to pair. For MicroSD playback, insert a card with MP3 files into the card slot and use the speaker controls to start playback. Adjust volume on the speaker or from the connected device. Keep the distance between the speaker and the source device within the specified 10 metre range for stable wireless performance.

Recommendations

For optimal performance place the speaker on a stable surface away from large obstructions and other wireless devices that may cause interference. Use MP3 files encoded at common bitrates for reliable playback from MicroSD cards, and maintain a Bluetooth connection within the recommended 10 m range for uninterrupted streaming.