Adscope Electronic Stethoscope Black Larynogoscope Supplies 9N) 1N(1000N 1335N) * Battery Style:Right Ear 9N) 1N(1000N 1335N) * Battery Life: 6 8 hrs powered on 30 minutes after low battery condition * Charge Time: 80% charge => 45 minutes Full charge => 2 hrs * Data Storage Capacity: 150 tests * Calibration Points: 31 point (Every 10lbs 0 300) * Preset Test Length: 0 Bx 35 N95 Masks * Size: Regular * Provides a minimum of 95% filtration efficiency of 0 *Retail boxed w fitted foam inside * Amplifies up to 16x (24db) over traditional acoustic scopes * Patented piezopolymer film contact microphone provides wider frequency response than acoustic mikes used in competing models *Three frequency modes: Bell (15 200Hz) for cardiac sounds Diaphragm (100 500Hz) for lung sounds Extended Range (15 1000Hz) *16 level volume control * Holds last mode and volume setting for convenience *Auto shut off after 3 minutes extends battery life *Battery warning LED signals when replacement needed *Binaurals fixed at 15ß angle for snug fit *Specially constructed ADSOFT⁄ PVC eartips * Weight: under 6 oz measures just 28 * Uses ÀAAAÃ battery (included) * Made in Korea * 2 year warranty