Use the supplied USB Type-C cable to charge the headset.
for Sony WF-1000XM3 Earbuds – SopiGuard
Sony WF-1000XM3 Industry Leading Noise Canceling Truly Wireless Earbuds Headset/Headphones with AlexaVoice Control And Mic For Phone Call, Black : Electronics
The Complete Guide to Sony's Wireless Headphones and Earbuds
for Sony WF-1000XM3 Earbuds – SopiGuard
h.ear in 3 Truly Wireless (WF-H800), Help Guide
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User manual Sony WF-1000XM3 (English - 98 pages)
The headphone volume cannot be adjusted. (WF-1000XM3)
Manuals for WF-1000XM3
WF-SP700N, Help Guide