FM Four in One Smart Bluetooth Speaker: Compact Multi-Function Audio with 4.5W Output and ≥10 Hours Playback

The FM Four in One Smart Bluetooth Speaker consolidates multiple common audio and power functions into a single, highly portable device. It serves as a standard Bluetooth speaker for streaming music from smartphones and tablets, an FM radio tuner for accessing broadcast stations, and a portable power bank capable of charging other USB devices. This integration is housed in a compact unit weighing just 141g and measuring 64mm by 48mm by 35mm, making it easy to move between rooms, take outdoors, or pack for travel. With a substantial 1000 mAh battery promising ≥10 hours of continuous play time and Bluetooth 5.0 for reliable, energy-efficient connectivity, it is designed for users seeking versatile, all-day audio without relying on mains power.

Technical Specifications and Build

The core performance of the speaker is defined by a set of clear, measurable specifications that detail its audio capabilities, power system, and connectivity.

Audio Output and Driver

Audio reproduction is handled by a 33 mm speaker driver delivering 4.5 watts of output power. This specification indicates a capability suitable for personal listening or filling a small to medium-sized room with sound. The device supports a wide response frequency range from 20 Hz to 20,000 Hz, which covers the full spectrum of human hearing. Combined with a stated signal-to-noise ratio of ≥70 Dolby, these figures suggest a focus on clear, defined audio output with minimal background interference for its class.

Power and Battery Life

Central to its portability is an integrated 3.7V, 1000 mAh lithium-ion battery. This powers all functions and is rated to provide ≥10 hours of continuous playing time, whether used for Bluetooth streaming or FM radio. Charging is achieved via a standard USB cable connected to a 5V 1A power source, with a full charge cycle taking between 4 and 5 hours. The battery's capacity also enables the unit's secondary function as a power bank to recharge other mobile devices.

Connectivity and Control

The speaker utilises Bluetooth version 5.0 for wireless audio reception, offering improved range, speed, and power efficiency over older versions. The effective transmission distance is stated as being greater than 10 metres, allowing the source device to be moved freely within a typical room. Physical controls on the speaker housing allow users to manage power, volume, playback, and switching between Bluetooth and FM radio modes without needing the connected device.

Practical Uses and Application

This multi-function design opens up several practical use cases, moving it beyond a simple mono-purpose speaker.

Multi-Room Home Audio

Its compact size and wireless nature make it ideal for multi-room audio setups. You can easily carry it from the kitchen to the bedroom or home office, providing background music or radio without being tethered to a power outlet for hours. The >10 metre Bluetooth range ensures the connection remains stable even if you move to an adjacent room with your phone or tablet.

Travel and Outdoor Companion

Weighing only 141g and with its self-contained battery, the speaker is a natural fit for travel, picnics, or use in the garden. The ≥10 hour battery life covers a full day of use, and the inclusion of an FM radio means you can access local stations even in areas with limited mobile data. Its power bank function adds further utility, allowing it to serve as a backup charger for a smartphone if needed.

Benefits and Key Considerations

The primary value lies in the integration of functions, which can reduce the number of individual gadgets you need to own, charge, and carry.

Consolidation and Convenience

By combining a speaker, radio, and power bank, this product addresses the needs of users who value space-saving and simplicity. It eliminates the need to manage separate devices for these common tasks, and a single charging cycle prepares it for multiple roles. The availability in four distinct colours—Green, Pink, Red, and White—provides a choice to match personal or interior style.

Understanding the Specifications

The provided data, such as the 64x48x35mm dimensions, 141g weight, and 4.5W output, give a clear picture of the product's physical and performance profile. It is important to note that these are the sole specifications provided; performance in areas like sound clarity at high volumes or FM reception sensitivity in weak signal areas would be based on these foundational specs. The product is best suited for personal, casual listening scenarios where its multi-functionality and portability are the main advantages.