For Sony WF-1000XM4 / WF-1000XM3 Universal Earplug Sleeve Ear Cap Earmuffs(Black) Filter-360 Degree Camera Insulation material: PVC insulation

Insulation material: PVC insulation

then you can share Internet with the other computer (for Vista and for Windows 7

The inside of the hard disk case is covered with soft felt material to prevent the hard disk from vibrating

Power supply mode: USB charging/built-in lithium battery

For Sony WF-1000XM4 / WF-1000XM3 Universal Earplug Sleeve Ear Cap Earmuffs(Black) Filter-360 Degree Camera Insulation material: PVC insulation1. Effectively reduce external noise and enhance low frequency perception 2. Effectively solve the problems of long term wearing of ordinary silicone earmuffs and ear discomfort 3. Fits the shape of the human ear canal and is comfortable to wear 4. Different sizes are available 5. Not easy to slip off, soft and comfortable Specification: General Compatible with Sony: WF 1000XM3 Package Weight One Package Weight 0. 01kgs 0. 03lb One Package Size 10cm *