Harper Trucks PGDY0335P – Heavy Duty Hand Truck, 600 700 LB Capacity, Durable & Versatile Design HVAC It’s UV resistant It’s UV resistant 43" 11 mm Diaphragm Coating Carbon Active Noise Cancellation No Design In Ear (Intra aural) General Frequency Response 5 Hz to 45 kHz (Wireless) Sensitivity 100 dB at 100 mW Impedance 16 Ohms Noise Attenuation None Controls Microphone Location Earpiece Storage Capacity None Microphone Number of Mics 1 Type Condenser Pickup Pattern Omni Directional Frequency Response 100 Hz to 10 kHz Sensitivity 38 dB at 1 kHz 1 V Wireless Connectivity Supported Audio Codecs AAC 2 x 5 Inch Durable Swivel Casters the PGDY0335P makes transporting heavy items a breeze