Returns & Refund Guarantee details Buyers can receive a refund and keep the item(s) once the item(s) are not as described or possess any quality issues by negotiating directly with the seller.
NOTE:
1) If you choose HK post Air mail shipping way, delivery time need 15-60 days(some country 15-25 days, some country 25-60 days)
2)Brazil and Argentina and a few other countries, need 60-120 days, you can check the shipping time when you place order.
3)Via HK post Air mail, your tracking information is available within 5-10 days after we shipping the goods, please don't think that has questions.
4) Because Algeria Peru Iraq country post office have many questions, you can choose shipping via EXpress such as EMS DHL , we don't shipping goods via post mail to those country. If you still need cheap post mail shipping way, please tell us when you place order, shipping cost 3.74$ each time, but you need to confirm your order within 36 hours after we shipping your goods.
NOTE: 1)If you never use these mini micro special function device work for covert hidden talk, don't use HIFI music headset rule to judge it, if you want to listen HIFI music, please buy big ordinary speaker-headset.
2)This item is an electromagnetic induction type mini earphone, which is easy to be disturbed by the electromagnetic oven, fluorescent and mobile phone, high-voltage line, transformer, also school' electrically-controlled classrooms, etc
1.1)is there a ZZZZ---weak sound when you put the battery into the earpiece? This is a hint sound, because the earpiece is mainly used for covert talk, maybe you cannot convenient to replace the battery, this sound can remind you the battery level, it's not noise. When longer working time, the sound will weaker, suggesting that you need to change the battery
