Runolim Hybrid Active Noise Cancelling Headphones, Wireless Over Ear Bluetooth Product Details RUNOLIM Active Noise Cancelling Headphones are Designed to free your mind from the noisy outside world, use the most advanced chip and hybrid noise reduction algorithm to identify noise of different frequencies and have proven to effectively reduce external noise by 95% in more than 10,000 experimental results. ADVANCED ACTIVE NOISE CANCELLATION: RUNOLIM noise canceling headphones for adults have been proven to effectively reduce external ambient noise by 95% in over 10,000 experimental results, allowing you to enjoy true pure music and focus on your own business, no matter on a noisy street or coffee shop. Hi-Fi Audio HD MICROPHONES: For immersive music performances, RUNOLIM wireless headphones adopted updated sound processing technology, can easily handle bass and mid-range sound details, built-in high-definition microphone, can clearly capture your real voice when using voice assistant, video conference, or online class. 70 HOURS PLAYTIME BACKUP AUDIO CABLE: Low power consumption technology allows our Bluetooth ANC headphones can continuously play up to 70 hours in standard music mode, up to 45 hours in ANC mode. By included 3.5mm audio cable, you can also change it to wired mode when powers off, no power shortage problem anymore. SEAMLESS BLUETOOTH 5.3 CONNECTION: Foldable and adjustable design makes our wireless headphones suitable for different head sizes people. Bluetooth 5.3 connection technology enables ultra-fast and stable connections within a range of 33 feet (10 meters). Compatible with All Devices with Bluetooth Enabled or 3.5mm Audio Jack.? ? Notice: There is no active noise cancelling function with 3.5mm audio cable, you should use bluetooth mode for ANC function instead. ULTRA-COMFORTABLE DESIGN: The Ear muffs of the over-ear headphones are made of protein leather which mimics the texture of human skin, perfectly fits over your ears without any pressure. 30 days of free returns and 1years warranty is RUNOLIM guarantee, please feel free to contact us if you have any questions during using. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.