Brand : Morex Model Name: B11 ColorL Black Headset Design: Earbud Utility: Daily Use Type of eaphone: In the ear Connectivity: Wireless Audio Control: Yes Mic: Yes Charging Voltage: Micro USB 5V/0.5-1AH Working time: 8-10H working Current: 10-20mA Bluetooth Working Range : 10-15M Output power; 2x18mW frequency range : 2.401-2.480GHz Distortion factor: ≤1% Speaker: 16 20mW x 2 Frequency response: 20hz-20kHz SNR : S/N≥95 Charging time: 1-2hrs Battery 3.7V/250mAh (Polymer rechargable battery) StandBy time: 200H working environment: -10-60°C MIC: 4015 45DB + 3 DB Brand No Brand SKU 100354496_NP-1020630956 Model B11