Features: Brand: ZEALOT H2 Type: Neckband Speaker: 16Ω Frequency respond: 20Hz - 20KHz Bluetooth 4.0 technology Bluetooth operational range: about 5 M Built-in lithium-ion polymer battery 60mAhOutput: DC 5V Output Power: 30mW Operating voltage: 3.7V Color: Black、 White SNR: 75-90dB Distortion: ＋1% Dimensions: 38 x 16 x 28mm (Line length: 500mm) Weight: 17g Package Included: 1 x Zealot Bluetooth Stereo Headphone1 x Micro USB Charging Cable2 x Earbuds