Advantages: low price, mellow sound quality, and rich functions. The products of the new brand that have just come out will be more powerful.

Disadvantages: Currently not guaranteed nationwide, only sold on Jingdong and Tmall

Transmission distance

The transmission distance of bluetooth speakers is also a problem that everyone is more concerned about. The transmission distance of the Bluetooth speaker has nothing to do with the Bluetooth version, but mainly depends on the advanced degree of technology. The standard transmission distance of PowerClass2 is 10 meters; while the upgraded PowerClass1 increases the transmission distance to 100 meters and provides Hi-Fi stereo effects. Generally speaking, the distance between the mobile phone and the Bluetooth speaker is not too far, and the safe transmission distance is about 10 meters. Bluetooth speakers on the market all reach the 10-meter standard.

Version

When consumers purchase Bluetooth speakers, they often see numbers such as Bluetooth 1.1, 1.2, 2.0, 2.1, 3.0, and 4.0. These numbers represent different versions and also represent the anti-interference ability of Bluetooth speakers. In 2012, 2.0Z was common, 3.0 was the new mainstream, and 4.0 was just launched. Different versions of Bluetooth are related to the quality of the received signal. The new version puts more emphasis on overcoming noise interference. All new versions are backward compatible, and consumers should measure price and demand when purchasing.

Built-in battery

All Bluetooth digital speakers have built-in batteries and are truly wireless. The quality of the built-in battery directly determines the playback time and service life of the Bluetooth digital speaker. Before purchasing, please carefully inquire about the actual playback time and the number of times of repeated charge attenuation. It is recommended that consumers choose a polymer lithium battery as much as possible when choosing a Bluetooth speaker, without the danger of explosion.

Battery type:

1) Polymer battery:

Advantages: safe and efficient, the soft package has no hidden danger of explosion.

Disadvantages: There are many types, and the price difference between pure cobalt (good) and pure manganese (poor) polymer batteries is several times.

2) 18650 battery

Advantages: excellent performance, charging and discharging can reach the upper level (mostly used for notebook batteries), explosion-proof protection