Promate CrystalSound™ 7W High-Definition Portable Wireless Speaker

Powerful and clear wireless audio is delivered by the Promate CrystalSound™ 7W High-Definition Portable Wireless Speaker, designed for music playback at home, outdoors, by the pool, or while travelling. A 7W speaker output and 45mm driver are combined with Bluetooth 5.4 connectivity to provide stable wireless performance across a wide 40Hz–20kHz frequency range. With a signal-to-noise ratio of ≥90dB, detailed sound can be enjoyed with reduced unwanted noise.

Extended listening sessions are supported by the built-in 1800mAh lithium-ion battery, with up to 14 hours of playback at 50% volume. A wider stereo soundstage can be created through True Wireless Stereo (TWS) by pairing two compatible speakers wirelessly. An IPX6 water-resistant design is provided for added protection during outdoor activities and everyday use, while three RGB lighting modes add a dynamic visual effect to music playback.

Additional flexibility is provided through TF card playback, with cards of up to 64GB being supported. Popular audio formats including MP3, WMA, WAV, APE, and FLAC can be played directly from a compatible TF card. Hands-free calling is also supported, allowing calls to be managed directly through the wireless speaker.

Key Features

7W High-Definition Sound
Powerful audio is produced through a 7W output and 45mm driver, allowing music, podcasts, and other audio content to be enjoyed with clear and balanced sound.

Bluetooth 5.4 Wireless Connectivity
Reliable wireless connectivity is provided through Bluetooth 5.4, allowing compatible smartphones, tablets, laptops, and other Bluetooth-enabled devices to be connected conveniently.

True Wireless Stereo (TWS) Pairing
Two compatible CrystalSound™ speakers can be wirelessly paired through TWS technology, allowing a wider and more immersive stereo listening experience to be created.

Up to 14 Hours of Playback
A 3.7V / 1800mA lithium-ion battery is built in, providing up to 14 hours of playing time when used at 50% volume.

IPX6 Water Resistance
Protection against powerful water splashes is provided by the IPX6-rated construction, making the portable speaker suitable for outdoor activities, poolside listening, and everyday adventures.

TF Card Music Playback
TF cards with capacities of up to 64GB are supported, allowing music to be played without requiring a continuously connected smartphone or other source device.

Multiple Audio Format Support
MP3, WMA, WAV, APE, and FLAC music formats are supported through TF card playback, providing flexibility for different digital music libraries.

3 RGB Lighting Modes
Three RGB lighting modes are included, allowing colorful visual effects to accompany music playback.

Hands-Free Calling
Hands-free calling is supported, allowing compatible incoming calls to be handled conveniently through the speaker.

Portable and Durable Design
A compact construction is provided for convenient everyday portability, making the speaker suitable for indoor and outdoor listening.

Specifications

• Bluetooth Version: 5.4
• Input Rating: DC 5V / 500MA
• Driver Diameter: 45mm
• Speaker Output: 7W
• Frequency Range: 40Hz–20kHz
• Impedance: 4Ω
• Signal to Noise Ratio: ≥90dB
• Battery Capacity: Lithium-ion 3.7V / 1800mA
• Playing Time: 14 hours at 50%
• IP Rating: IPX6
• TF Card Maximum Capacity Supported: 64G
• TF Card Music Format Supported: MP3 / WMA / WAV / APE / FLAC
• RGB Modes: 3 modes
• RF Output Power: ≤20dBm

Conclusion

The Promate CrystalSound™ 7W High-Definition Wireless Speaker is designed as a versatile portable audio solution for indoor and outdoor listening. Strong 7W sound, Bluetooth 5.4 connectivity, TWS pairing, up to 14 hours of playback, IPX6 water resistance, TF card support, hands-free calling, and RGB lighting are combined in one compact speaker. It can be conveniently used for music at home, outdoor activities, travel, poolside entertainment, or everyday wireless listening.