UiiSii HM13 Wired In-Ear Headphone with Mic Specification: Main Feature Connection Type Wired Impedance 21Ω Sound level/Sensitivity 101±3dB Frequency 20-20000Hz
V8s Business Bluetooth Headset Wireless Earphone Specification: Type:Bluetooth Headphone Style:Hanging-ear Communication:Wireless Bluetooth Protoco: 4.1 Sensitivity:96±3dB Channel: Stereo Color: Black Frequency