1. Factory direct supply, small profits but quick turnover, factory visit is available by appointment. 2. Product manual is in English, with FDA/CE certification. 3. Product supports OEM/ODM cooperation, drop shipping. 4. Product online quotation is tax-exclusive, please consult customer service for large quantity discount. 5. Products are only supplied to purchasing customers of cross-border e-commerce platforms and cross-border foreign trade companies, domestic customers should be cautious. Product Parameters: Material: ABS Color: White, Black (Optional) Maximum OSPL90: ≤120dB±3dB High Frequency Average OSPL90: 103dB±4dB Average Gain: 30dB±5dB Frequency Response Range: 300Hz-3500Hz Equivalent Input Noise Level: ≤29dB Total Harmonic Distortion: ≤8% Charing box: Include 300mAH Full charing about 2 hours OK to hearing Amplifiers recharing about 3~4 times Hearing Amplifiers: Include 35mAH Full charing about 2~3 hours Normal working more than 20 hours Packing List: Host x2 USB charging cable x1 Earplugs x6 Brush x1 English Manual x1 Product Dimensions (Length x Width x Height cm) 2x2x2.5cm Product Packing Dimensions (Length x Width x Height cm) 12x9x3.5cm Product Net Weight (g) 3g Product gross weight (9) 110g Outer box size (CM) 50X42X25cm Outer box gross weight (KG) 12KG Packing quantity 100
4.0 sur 5 sur la base de 4,274 avis 
