QKZ Power Inner Core Bluetooth TWS Upgrade Headphones with HD Microphone. Add-On module for QKZ: VK1 VK2 VK4 VK6 V80 AK6 PRO ZXD Headphones (HI-Res Audio, DSP TEXAS Instruments Certificates). This additional module of Bluetooth headphones has a headphone cavity connection design for some QKZ wired headphone models: VK1 VK2 VK4 VK6 V80 AK6 PRO ZXD. This update allows listening on all Bluetooth devices. (It only works with one of these QKZ wired headphone models: VK1 VK2 VK4 VK6 V80 AK6 PRO ZXD). Compatible with Multiple Bluetooth devices (Mobile Phones, laptops, Pc, Tablets, Wireless Microphones, etc.) N. art. SAS9567 Description 1. Compact body and powerful internal core for better Bluetooth experience of Audio/Music listening and high-definition calls. 2. The design of the built-in antenna, can reach a long-distance transmission of 10 meters. 3. CVC6.0 noise reduction, the call is clear and smooth. 4. Supports wired earphones and designed for this Bluetooth upgrade as QKZ: VK1, VK2, VK4, VK6, V80, AK6 PRO, ZXD 5. Hi-RES certification by Japanese Audio Association. Listen to every musical detail. 6. 180 mAh Li-On Rechargeable Battery. 7. 180 hours of Standby time 8. 8 hours of Battery Life 9. 10 meters effective range (Line-of-sight) 10. Supports AAC Codec C E, Hi-Res Audio, DSP TEXAS Instruments certificate ATTENTION: Before making your purchase, contact me to check the availability. Thank you The price doesn't include taxes. Notice to the buyer: Before proceeding to payment with Paypal, make sure to enter the correct address for shipping. We do not accept shipping addresses other than those indicated in the Paypal purchase order. So, make sure the email associated with your Paypal account is active, we will need it to send shipping and invoice notifications. We take care to send the pre-invoice before shipment by legal email you must accept strictly. Be sure to provide an active mobile number that will serve the courier for the delivery of your package. If the email address is inactive and we do not receive your response by accepting the pro forma invoice, we will consider the purchase transaction without confirmation to continue shipping the items. Shipping "FREE SHIPPING" for the following destinations: Europe (The following destinations aren't included in "Free Shipping": Albania, Andorra, Armenia, Azebairgian, Bosnia, Georgia, Liechtenstein, Macedonia, Monaco, Montenegro). Canada Mexico Australia Japan United Kingdom USA The shipment will be the international economic one and may take from 5 to 20 business days (depending on the destination) to arrive. The shipping is fully traceable. Therefore, the buyer will be sent a message with the link of the courier who has been entrusted with the shipment and the tracking number, to check the package. Attention: For all other destinations not listed, please contact me to evaluate together the cost of shipping, islands included. I will try, where possible, to satisfy you.