upgrade your listening experience with these wireless bluetooth headphones. turn up the music dance to your fave tunes with high-quality sound! the adjustable headband ear cushions provide a super comfy listening experience. have hands-free convos with the built-in mic! features a foldable design for easy travel compatible with iPhone, iPad, samsung galaxy, android? smartphones, tablets other bluetooth devices specs: driver diameter: 40mm; impedance: 32 Ohms; frequency response: 20 Hz - 20 kHz; sensitivity: 102 dB +/- 3 dB; battery capacity: Li-ion battery 3.7 V 200 mAh; playtime: 3-4 hours; charging time: 2-3 hours; bluetooth range: 32.8 feet; bluetooth version: 5.0; charging method: micro USB charging cable Country of Origin: Imported