The WF-XB700 are the latest in Sony's Extra Bass lineup. Not to be confused with the WH-XB700, which are full-sized circumaural headphones, the WF-XB700 that we are looking at today are a pair of truly wireless earbuds. The WF-XB700 are a more affordable alternative to Sony's popular but expensive WF-1000XM3 earphones. These do not include the active noise-canceling and some of the more advanced features of the WF-1000XM3 but have a more standard feature set with the addition of Extra Bass sound. At $130, the WF-XB700 are a full $100 cheaper than the WF-1000XM3 and more in line...
Source: https://www.gsmarena.com/sony_wfxb700_truly_wireless_earphones_review-news-44109.php