Headphone Techmade TM 046 Wireless BlueMicrophone: Active For Calls OnlySpeaker: Ø 40 MmBattery: 160mAh LithiumOther Functions:FM RadioSD Card Slot Supports Up To 32GB Sensitivity: 110 ± 3dB SPL At 1KHZBluetooth Version: V5.0Operating Distance: Up To 10 MetersSignal To Noise Ratio SNR : 95dBFrequency Range: 20Hz 20kHzHeadphone Impedance: 32 OhmsRated Power: 15mW X 2Input Interface: Micro USB, 5V DC 1AOutput Interface: 3.5mm JackAUX Cable: Can Be Used With An AUX Cable For Audio Only Microphone Excluded In This Mode