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BlitzWolf BW-F4: Outdoor Use Speaker With CSR 4.0 Bluetooth

If you like to go traveling with music, then an outdoor use speaker would be your good fellow. At this article, I will show you an excellent product BlitzWolf BW-F4, which features long battery life, wide connectivity and high-fidelity sound. The introduction involves three parts, including designs and shows, features and battery.

Designs and Shows

It features overall black fuselage with a dimension of 20.0*6.0*6.4cm. And it shapes like a pencil box. With a compact and portable body size, it is easy carrying. Made of ABS plus metal materials, it looks highly sophisticated. The simple buttons design meets your need of normal operations.

Besides, on its upper left corner, there is a 3.5mm audio jack. If your device does not support Bluetooth connectivity, you can connect it via this jack, very conveniently. By the way, it supports CSR 4.0 Bluetooth technology so that you can complete wireless connection with your devices. And the pairing only contains three steps.


This BlitzWolf BW-F4 has several highlights, including long battery life, wide connectivity, high-fidelity sound and built-in clear mic. And I will show you about its obvious features of high-fidelity sound and built-in clear mic next.

It is configured with dual powerful 10W drivers and a central bass radiator. The 45mm 4ohm precision drivers include four parts of the composite membrane, TPE sound vibrating film, 18-core aluminum alloy speaker and drive permanent magnet. Balanced frequency response with an enhanced bass diaphragm, it brings rich lows and crisp highs.

Moreover, it has the hands-free function. Built-in noise reduction mic with the watertight seal, it delivers crystal communication. When a call comes in, you only need to press the answer button and you can communicate with your friends. Very easily and conveniently.


It is built in a 4,000mAh large capacity lithium battery, which supports up to 7 to 10 hours of playing time at 70% volume. And it needs 3 to 4 hours charging time.


To sum up, BlitzWolf BW-F4 is an outstanding product. To some extent, it has a waterproof function. However, in order to extend the use, you have better not to make it exposure to water.

I think most people choose it because of its light and easy to carry. If you are searching for such a product, you can have a try! And I promise that you will like it.