Rechargeable Handle 3.5v for Export 220 Volts Pulse Monitor Saturation Sound Pressure Level (SSPL) lactose free Saturation Sound Pressure Level (SSPL) 118dB Frequency Range 200 4200Hz Total Harmonic Wave Distortion ≤10># td### Reference Test Gain 28±5dB Input noise ≤20dB Sound amplification 45±5dB Max Cover 6 Month Limited Warranty * Medicare code: E0371 Group 2 Support Surfaces WA 71062 C is a 220V Rechargeable Handle that plugs into the wall no desk charger needed * It includes as well as a nickel cadmium Ribbed trim soft and non abrasive ensures a non slip grip * Manufactured chromed brass for durability and long life powered by rechargeable batteries or C (depending on model)