Reset Procedure Turn off Bluetooth function on your devices.Triple tap both of the left and right earbuds simultaneously to reset and remove pairing record.Charge earbuds for hours and reconnect them with your devices via Bluetooth. Stereo Mode: Take both of left and right earbuds out of charging case and pair them first, then connect earbuds with your devices. Mono Mode: Take only one earbud out of charging case and connect it with your devices. VEENAX X11 Bluetooth Wireless Earbuds Hi-Fi Stereo Sound & Super Long Playtime Powered by 10mm oversized drivers, VEENAX X11 Bluetooth wireless earphones deliver exceptional stereo sound and boosted bass. Noise cancelling microphones highlight your voice and reduce the background noise during phone calls. 150 hours ultra-long battery life with the charging case brings you a nonstop music journey. HiFi Stereo sound and enhanced bass. 10mm oversized drivers for ultra dynamic stereo sound. Built-in microphone & cVc 8.0 environment noise cancelling for clear calls. Up to 15 meters Bluetooth connection (without any barrier). 150 Hours ultra long playtime supported by charging case. Mono & Stereo Mode: Use each earbud independently or together. Stereo & Strong Bass Customized 10mm dynamic drivers produce immersive stereo sound and powerful bass. Use the largest eartips to have deeper bass and noise isolation. Adopt the most advanced Bluetooth technology, VEENAX X11 wireless headset has fast and stable connection for up to 15 meters distance. Crystal Clear Calls The built-in MEMS microphones that utilizing the latest cVc 8.0 noise cancellation technology, X11 Bluetooth in ear headphone offers advanced voice enhancements and noise reduction, achieving the best phone call quality even in noisy environments. Ideal for home offices. Ultra Long Playtime A single fully charge gives you over 6 hours of playtime. With fully charged 2500mAh charging case, you can constantly use X11 Bluetooth sport earphones for 150 hours in maximum. Supports 1 hour of playtime after 10 minutes quick charge. Powered by USB C charging cable. VEENAX X11 Bluetooth Stereo Earphones. Immersive Stereo Sound and Intense Bass. Enjoy Your Music On the Go Touch Control Operation * Music Playback Play/Pause: Single tap left or right earbud.Next Song: Double tap right earbud.Previous Song: Double tap left earbud. * Volume Control Volume +: Long press right earbud.Volume -: Long press left earbud. * Making Calls Answer/Hang up a Call: Single tap left or right earbud.Reject a Call: Long press left or right earbud for 2 seconds. * Activate Voice Assistant Triple tap left or right earbud. * Power On/Off Power on: Long press left or right earbud for 3 seconds.Power off: Long press left or right earbud for 5 seconds. * Reset Procedure Turn off Bluetooth function on your devices.Triple tap both of the left and right earbuds simultaneously to remove pairing record and reset.Charge earbuds for hours and reconnect earbuds with your devices via Bluetooth. Warning: If earbuds can not be paired simultaneously or connected with your devices, please follow the reset procedure to reset earbuds, then charge the earbuds for hours. Package VEENAX X11 Wirless Sport Earbuds Charging Case USB-C to USB 3.0 Charging Cable S/M/L EarTips Manual