UiiSii E1 TWS Bluetooth Earbuds Dual-Ear In-Ear Design for Sports Deep Bass Noise Cancellation and High-Quality Stereo Sound - White

Key FeaturesSound Quality: 13mm small dynamic driver unit for faster and clearer signal transmission, delivering powerful bass that feels like you're right thereWearing Comfort: In-ear design, ergonomically designed for all-day comfort without discomfortBattery Life: Comes with a portable charging case, providing up to 25 hours of music playback with ample battery capacityWater Resistance: IPX5 water resistance rating for comprehensive protectionTouch Controls: Sensitive touch controls allow you to answer calls, switch tracks, and more with a simple touch, ensuring a seamless user experienceProduct SpecificationsBluetooth Version: 5.3Speaker Diameter: 6mmFrequency Range: 2020,000HzSensitivity: 100 3dBImpedance: 16Transmission Range: Approximately 10mSingle Earbud Weight: 4gTotal Weight: 43g Input: 5V 1A Playback Time: Approximately 25 hours Lithium-ion Polymer Battery 3.7V: Earbud 40mAh, Charging Case 400mAh Standby Time (including charging case): Approximately 300 hours Charging Time: Earbud approximately 1.5 hours, Charging Case approximately 2 hoursTroubleshooting: When only one TWS earbud connectsCheck if the battery level is below 10%. If too low, charge immediately.If earbuds fail to auto-pair, both red lights will flash rapidly. Quickly press the power button on both earbuds 5 times simultaneously. When red lights appear, reset is complete.Place both earbuds into the charging case, then remove them. They will automatically pair successfully.