Sony WF-XB700 Extra BASS True Wireless Earbuds Headset/Headphones with mic for Phone Call Bluetooth Technology, Black (WFXB700/B) 
 
Truly wireless design with BLUETOOTH wireless technology for total freedom 
EXTRA BASS for deep punchy sound 
Up to 9hr battery life total 18hr with charging case 
Easy and clear hands-free calling 
IPX4 water resistance against rain and sweat 
Ergonomic design for a secure comfortable fit 
Quickly access your smartphone’s voice assistant with a quick touch .