Remax RB-T17 Business Ultra Thin Metal Bluetooth Earphone Black

Features

• Wireless Bluetooth earbuds with built in microphone.
• All day comfortable wear.
• Specifications: Bluetooth version is 4.1, transmission distance is 10 meters, rate of frequency is 2402-2480Mhz, output sensitiveness is 110db plus/minus 3, sensitiveness of microphone is -44dB, battery capacity is about 55mAh, impedance is 16R, rater power is 3mW, playing time is 2 hours, standby time is about 80 hours, charge time is about 2 hours and net weight is 6 grams.