Volkano Earbuds vk-1112 Yoven Mooroongapillay 4 years ago Bluetooth Version 2 Range 10m Charge Time 5h Playback Time 5h Profiles A2DP, AVRCP, HFP, HSP Battery 2 x 50mAh Frequency Response 20Hz – 20kHz Impedance 32Ω Sensitivity 85dB Driver Size 8mm Signal to Noise Ratio >85dB