Reviews: How about the weight?

Allfei: 170g. ( Nov 19, 2016 19:25 )

Reviews: Can you do my customized package?

Allfei: Yes, but the MOQ is more than 1000pcs. ( Nov 8, 2016 16:40 )

Reviews: Is there a built in microphone?

Allfei: Yes there is . ( Oct 23, 2016 18:9 )

Reviews: can I workout with these headphones?

Allfei: Yes, of course. ( Oct 9, 2016 15:34 )

Reviews: Can you send me the packing picture?

Allfei: Ok, I'll sned it to you via emai. :) ( Sep 28, 2016 17:9 )

Reviews: can you use a 3.5 jack so if you're battery runs out?

Allfei: Yes, you can. ( Sep 4, 2016 18:10 )

Reviews: can i use this headset for calls by using cellphones?

Allfei: It come with the microphones and you just need to tap the touch panel when there is incoming calls. ( Aug 17, 2016 9:25 )

Reviews: How do I know when it's fully charged?

Allfei: On the side opposite the charging port is a small light, red while charging, which will change to blue when done. ( Aug 5, 2016 21:53 )

Reviews: Are these headphones compatible with Apple products?

Allfei: Yes, It can be well compatible with Apple devices ( Jul 19, 2016 11:26 )

Reviews: Is the battery replaceable?

Allfei: No, it's a built-in Lithium Battery ( Jul 7, 2016 17:44 )