Cheap And Discounts Lenovo X4 Bone Conduction Bluetooth Headphone Sports Earphone Waterproof Wireless Headset with Mic Ear-hook TWS Bass Hifi Stereo Wholesale. Buy Directly From Merchant Smart Life-Global Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.