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Dud iOS Zeus Air has a cute appearance, Hafiz stereo sound and binaural call technology. We collect several issues you may have when in usage. Q: my finger is too big to take the earbud from charging case. A: put your finger between L and R earbud, push right to take out R earphone, push left to take the L one. Q: How to ensure a Hafiz sound quality: The key to ensure sound quality is the fit of the foam or rubber to the listener, kindly choose suitable earpiece to wear, or you may lose up to 30-75% of sound quality. Q: Why could I hear the microphonic issue when wear the earbuds in walking? A: some customers may have This issue when wear rubber earbuds, we suggest to change to foam one to check. Q: when press the button, my ear does’ T feel comfortable. A: you could pick up one earbud to play/pause, previous/ next track and so one, Once finished, and then re-wear in your ear. Q: I don’ T feel comfortable to wear it, and it’ s easy to fall off. A: kindly choose suitable angle and earpieces to wear earbuds, we have 4 pair earpieces for you to choose. Q: my left and right earbud could not connect with each other? A: while the earbuds are off, press and hold the multifunction buttons for around 10S until red and white indicators flash alternatively, then turn off after 3 times Quick flash. And then re-take it from charging case, It will connect with each other automatically. Package details1 x Dud iOS Zeus Air Bluetooth earphones 1 x USB Charging Cable6 x Interchangeable Ear tips1 x Charging case1 x User Manual Product specification Bluetooth Version: Bluetooth 5. Bluetooth profile: avrcp_v1. 6/hfp_v1. 7/hsp_v1. 2/a2dp_v1. 3maximum working range: 33 feet/10M (no obstacle)standby time: 120 hours Charging time: 1. 5 hour stalk time: 4 hours Earbud weight: 0. 16oz/ 4. 7Gearbud dimension (L * W * H): 0. 96*0. 86*0. 64 inches/ 24*21. 9*16 mm Included Components: 1 re-chargeable case with charge cord, L & R earbuds, 4 pairs of interchangeable ear tip and one user manual