S9 Mini TWS True Wireless Bluetooth Magnetic Stereo HIFI In-Ear Earphone Sport Earbuds Headset with Charging DockFeature:1. Mini body and invisible style: easy to fit your eaIt's almost invisible, just like a little dot in your ear.2. TWS real wireless design: no messy line, easy to carry. The left and right headphones have Bluetooth function and can be used separately or in pairs.3. High-fidelity stereo: wireless left and right channel separation, real stereo HiFi sound effect, bring unexpected natural music to your ears.4. Bluetooth 5.0 supports stable signals that can be easily connected to your device in seconds and can be transmitted over a wide range of up to 10 meters.5. Bluetooth Hand-Free Dialing: Built-in Noise-Reducing Microphone for Hand-Free Calls and provides you with loud sound quality and clear communication effects.6. Listen longer: Both left and right earphones have 60mAh rechargeable lithium batteries built into them, which enhances super endurance and supports up to 6-7 hours of playback time.7. Portable nagnetic charging Base: 400 mAh large capacity, can charge headphones anytime and anywhere, provide overall protection for headphones.8. Battery display: Display the battery and connection status on the phone, you can easily understand the battery status, so that the battery can be charged in time before running out of power.Specification:Bluetooth version: V5.0 RTL8763, compatible with V4.2, V3.0 and previous versions.Bluetooth protocol: HSP, HFP, A2DP, AVRCPFrequency range: 2.402GHz-2.480GHz ISM BandFrequency response: 20Hz-20KHzTransmission distance: about 10 meters / 33 feetWireless standard: Class IISignal to noise ratio: 85dBHint: LED, voice prompt.Applicable equipment: Bluetooth mobile phone, computer and so on.Battery: built in 3.7V 60mAh rechargeable lithium ion batteryCharge base capacity: 400mAhCharging power: USB port, DC 5V power adapterPlay / talk time: about 3.5 hours.Talk time: about 6-7h (depending on the volume of play).Charging time: 1-2 hours.Color: WhiteNote: Please allow 1-3cm differs due to manual measurement.Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.