2.5mm Talkback Cable Live Chat Turtle Beach X11 DX11 PX21 X12 PX3 XL1 XBOX - AliExpress
Amazon.com: Ancable 3-Pack 3-Feet 3.5mm Male to 2.5mm Male Replacement Cord for Xbox One Talback/Chat Cable, Turtle Beach X11 DX11 PX21 X12 PX3 XL1 Headset and Astro Gaming A40 A50 Headset :
2.5mm Right Angle Live Chat Talkback Cable for Turtle Beach X11 DX11 PX21 X12 PX3 XL1 XBOX 3ft – Ancable
2.5mm Talkback Cable Live Chat Turtle Beach X11 DX11 PX21 X12 PX3 XL1 XBOX - AliExpress
Battery for Praktica VLC LTL DTL EE LLC PLC + PX21 Adapter by Ausgeknipst | eBay