X9 wireless earphone compatible with Bluetooth 5.0 with one microphone inside the ear sports headset for stereo sound Xiaomi Huawei

X9 wireless earphone compatible with Bluetooth 5.0 with microphone single in-ear sports headset for stereo sound Xiaomi Huawei feature: 1. BT V5.0 + wireless signal EDR, range 5 meters; 2. Built-in DSP sound processing system, which can eliminate noise and echo well, clear call quality; 3. Very small size, hidden in the ear, no wearing burden; 4. Safe battery protection to ensure working time up to 5 hours; 5. The headset connects to two BT devices at the same time, such as iPhone Samsung and Huawei and other phones and PC and PAD and other connection and music and gaming devices; 6. Voice prompts for pairing, connection, play/pause; 7. Function button for on/off, song switching, language change, answer calls. specifications: model: X9 type of headset: usable for both left and right ear BT version: V5.0 + EDR BT distance: about 10 m working time: about 4-5 hours charging time: about 1-2 hours battery capacity: 50 mAh battery type: rechargeable lithium battery with capacity of 55 mAh compatible mobile phones: compatible with Android and iOS and Microsoft and tablets, 99% of which have BT technology. frequency range: 2.40-2.48 GHz distortion factor: ≥1% frequency response: 20 Hz-20 kHz wearing method: inside ear/invisible headset packing list: 1 × small BT headset (one piece only) 1 × USB charging cable 1 × manual