Lenovo Lp12 True Wireless Earbuds BluetootH-Compatible 5.0 Stereo IN-Ear Headphones Tws Earphones With Microphone Digital Display Charging Case specification: brand: Lenovo model: Lp12 bluetootH-Compatible Version: 5.0 speaker Size: 10mm impedance: 32? sensitivity: -42db signal To Noise Ratio: 58db distortion: 5% transmission Range: 10m battery Capacity: 40mah music Playback Time: 4 Hours (single Ear) case Battery: 300mah microphone: Yes charging Port: Usb C product Size: 67*35*31mm product Weight: 46g packing Size: 95*95*36mm gross Weight: 80g