KZ-EDC 1.2m High-Value Subwoofer Wired HIFI In-Ear Headphones, Style:Without Microphone(Shining Black) Filter-Headset Stand General Compatible with ThinkPad: X390

General Compatible with ThinkPad:  X390 Yoga

8) Working distance: 10m

Desktops and laptops with an available DisplayPort output

or any other BT 4

General Compatible with Blackberry:  Classic / Q20

KZ-EDC 1.2m High-Value Subwoofer Wired HIFI In-Ear Headphones, Style:Without Microphone(Shining Black) Filter-Headset Stand General Compatible with ThinkPad: X3901. Wire: oxygen free copper double parallel 2. Frequency response range: 20 40KHZ 3. Plug Type: 3. 5mm 4. Pin type: 0. 75mm 5. Sensitivity: 95dB 6. Ergonomic design, comfortable and stable to wear. Specification: Package Weight One Package Weight 0. 04kgs 0. 10lb One Package Size 10cm * 10cm * 5cm 3. 94inch * 3. 94inch * 1. 97inch Qty per Carton 160 Carton Weight 7. 40kgs 16. 31lb Carton Size 42cm * 52cm * 42cm 16. 54inch * 20. 47inch * 16. 54inch