Good performance: The rotating speed can be up to 7000rpm

Filling material: silica gel

Place the nasal probe gently into the nostrils or position the external attachment as instructed

Applicable age: 6 years old and above

Product specifications: American regulations

Wired Mini Earphone with Microphone Office Gadgets Good performance: The rotating speedHeadphone type: ear hook headphones Wearing style: earplug style Headphone output source: general Plug diameter: 3. 5mm Plug type: straight plug type Sounding principle: ring iron Frequency response range: 20 20 (Hz) Impedance: 20 5 () Sensitivity: 90 5 (dB) Distortion rate: 0. 01 (%) Wire length: 1. 2 (m)