1. New kind of head-band2. Durable and light weight design for wearing comfort3. Newest structure for part of microphone whirling flexiblySpecifications:* Loudhailer diameter: 40mm * Frequency range: 20~20,000Hz * Sensitivity: 110dB * Impedance: 32 ohms * Cable length: approx. 2.5m (volume control) * Maximum power input: 100mW * Plug (mm): 3.5 stereo Microphone:* Type: electret condenser microphone * Polar pattern: omnidirectional * Impedance: low * Sensitivity: -58dB * Operating voltage: 3V * Frequency response: 30-16,000Hz
