TW40 wireless headphones Work & Office Bags We also advise checking the

We also advise checking the size chart carefully before purchasing

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and colors

it is always advisable to select a larger size if you're between sizes

TW40 wireless headphones Work & Office Bags We also advise checking theProduct model: TW40 Bluetooth headset) Bluetooth version: LanXun Realtek 5. 0, HD binaural call Transmission distance: 15 20 meters without obstacle Product speaker: high quality true copper ring speaker Product chip: True stereo chip Working hours: Lanxun (3 4 hours), Realtek (4 6 hours) Charging warehouse standby time: 30 days + Headphone battery capacity: pure cobalt 50 mAh Charging battery capacity: 400 mAh pure cobalt (with IC protection board)