JAZZ-BT39 comes with BT V4.2. It provides both high quality signal and low power consumption. Its built-in high-density 70mAh lithium battery provides 3 hours playback time. The Aluminum alloy cavity with 10mm NdFeB monomer speaker provides an excellent, clear & detailed high sound quality. Features: - Magnetic ear bud design, avoid shaking when idle - Large button control design, easy to operate Specifications: - BT Version: 4.2 - Speaker Dimension: 10mm NdFeB speaker x 2 - Sensitivity: 107 +/- 3dB S.P.L. at 1 KHz 1mW - Frequency Response: 20 ~ 20000 Hz - Impedance: 32 ohm - Microphone sensitivity: -42dB ± 2dB at 1K Hz - Frequency Response: 20 ~ 20000 Hz - Directivity: Omnidirectional capacitive - Rated operating voltage: 5V - Rated input current: 50mA - Working Distance: +/- 10M (Open space, no obstruction) - Music Time: 3hrs (at 60% Volume) - Talking Time: 4hrs - Standby Time: 90hrs - Battery Capacity: 3.7V 70mAh - Charging Time: +/- 2hrs - Buttons function: Short Press: Volume up, Call answering/Play/Pause, Volume down Long Press: Previous song, ON / OFF, Next song - Compatible with most devices with Bluetooth technology (e.g. iOS, Android or Windows smartphones, PC, Laptop, MacBook, etc.) - Cable

+/- 60cm - Colour: Black - Product code: JAZZ-BT39 K What's in the box 1 x Earphone 1 x Micro-USB charging cable 2 x ear plug silicone sets 1 x User manual