Ditmo DM-6670 In ear Headphones with Microphone and Volume control for smartphone- White + Black Smart in-line remote control with microphone change volume, skip tracks, answer or end calls and active Voice Control,from a sleek built-in unit. Soft silicone ear buds provide a super comfortable, noise reducing fit. Compatible for all 3.5mm jack devices. Excellent sound quality. Frequency response 20Hz-20kHz,Sensitivity:94 dB S.P.Lat 1KHz