Please note, this item ships from an international seller. Expected delivery is 10-15 days. F911 In-Ear Mini Wireless Headphones Stealth Bluetooth Earbuds Compatible Headphones Stereo Earbud Headphones Describe: Product model: F911 Product color: as shown Sound unit: 8mm Speaker sensitivity: 95dB 1kHZ Frequency response range: 20Hz~20kHz Microphone sensitivity: -38dBV/Pa Bluetooth compatible version: BT5.0 Receiving distance: 15m Battery capacity: 25mAh Music playing time (50% volume): 3h Charging time: 50 minutes USB: charging port Waterproof rating: IPX4 Headphone weight (without packaging): 2.5g Specification: 1. The headset can display the battery level when in use, reminding you to charge in time. 2. This headset has a call function, you can answer calls easily and conveniently, and make your life interesting. 3. You can control the earbuds by touching, and the Bluetooth V5.0 technology ensures durability. 4. This headset supports music playback, you can easily connect it to your mobile phone to provide you with clear stereo sound. 5. The earphones are rechargeable and can be used for about 3 hours when fully charged. Package Included: 1x headphone 1x USB charging cable