1. Support card playback. The good price and quality TG157 Bluetooth Speaker products that support card playback, such as Bluetooth speakers that support TF card (card used in general mobile phones) or SD card, are more practical and portable.
2. There is an audio cable interface of suitable length. In addition to Bluetooth and plug-in cards, the audio cable interface is also necessary. With this interface, the good price and quality TG157 Bluetooth Speaker can be easily connected and played with devices with the same interface such as mobile phones and computers.3. With FM radio function. Although many people no longer use the radio, there are still a large number of people who need and like this function, so when buying a good price and quality TG157 Bluetooth Speaker with FM function, it depends on the receiving frequency and how many can be received.
4. Supported music formats. This is also quite important. When inserting a card to play music, you must consider the music format. Generally, the good price and quality TG157 Bluetooth Speaker products that supports the card can play music in MP3 and WMA formats, but the more formats it supports, the better. 
5. Play bit rate. The higher the playback bit rate, the better the sound quality, so when purchasing a good price and quality TG157 Bluetooth Speaker, you should choose a speaker that can support high-bit-rate audio files, so that you can enjoy higher-quality music.
6. Battery type. The rechargeable lithium battery is more convenient to use, and the good price and quality TG157 Bluetooth Speaker products also need to have a relatively strong battery life to avoid the situation of running out of power after not using it for a long time.