Questions & AnswersQ: Why the earphone box have T10 / T10C ?A: T10 no wireless charging funciton eaprhone , T10C with s wirless charging function .it is factory mark it. Q:Why the earphone no sound when i call ? A:Please select answering mode 'Bluetooth', then you will hear sound on earphone. Q: How many hours have autonomy the battery of the headphones?A: 3-4 Hours. No matter you listen to music or make a calling.Q: Can I use L or R seperately?A: Yes, you need connected one by one. Q: Can the charging case charge the phoneA: No Q: Can I take a shower with these headphones?A: Yes, you can. But not recommendQ: When will the seller ship my order ?A: Usually with stock, send out in 24hoursQ: When I can receive my order ?A: It depends on different countries, fastest 6 days, latest in 20-35 days ,sometimes will delay.Q: What should I do if had charging or headset problem? Open a dispute ?A: Contact seller directly, will respond to you in 24 hours. Don't open dispute so seller can supply bes