PTron Soundster wireless headphones adopts the most reliable chipset of and is one of the few Bluetooth v5.0 headphones in the market which can truly support long music playtime. It offers easy & fast pairing with smart phones/tablets/PCs, and allows you to enjoy high-fidelity sound with brilliant treble, smooth mid-ranges, and high bass. Rechargeable 1000mAh battery with low power consumption offers up to 20 hours of music play time in the wireless mode. Or you can switch the wireless headset to the wired mode by connecting directly to your mobile devices via the included 3.5mm aux cable without draining any battery at all. Stretchable padded headband can fit various heads of most sizes; 115-degree swiveling ear pads with super soft cushion provide an ergonomic & comfortable around-ear fit; lightweight construction won’t add too much weight to your head. Transmission distance: Up to 10m, Speaker Size: 40mm, Frequency Response: 20Hz-20kHz, Impedance: 64ohms, Mic Sensitivity (1kHL): 115dB+/-3dB, Battery Capacity: 1000mAh, Music Playtime: Up to 20 hours, Input Power: 200mA, & Charge Time: 5-6 hours.