Product Description:
Battery Capacity : 3.7V 80mAh 0.3Wh
Replacement Battery Model: CP1254 A3

As shown, the battery comes with  tab by default. 
Compatable with :
Sony WF-1000XM3 Wireless Noise-Canceling Headphones
Sony WF-1000X Wireless Noise-Canceling Headphones
Sony WF-SP700N Wireless Noise-Canceling Headphones for Sports
Sony WF-XB700 EXTRA BASS True Wireless Earbuds Headphones
Sony WF-SP900 Sports Wireless Headphones


Package include:
2 x CP1250 A4 Battery