GranVela Q8 Multifunctional 3 in 1 Wireless Headphones Foldable Bluetooth Headphones with Microphone, Micro SD/TF Card Player, FM Radio and 3.5mm Detachable Cable-Black [USB Rechargeable]: Built-in rechargeable Lithium battery lasts up to 8-10 hours of music play time, universally compatible with most Bluetooth-enabled phones. Works for iPhone, iPad, Android and Smartphones etc. With 5 Minutes of fast charging you can listen for up to 1 Hour. [Hi Performance]: 40mm Magnetic Neodymium Drivers deliver clear high and deep bass. You can choose different sound mode like ROCK/POP/CLASSIC/JASS/ BLUE/HALL/BASS/ SOFT/ COUNTRY/OPERA (Press EQ Key). [Comfort and Compact]: Soft leatherette earpads ensure comfortable wearing. The headband is Adjustable in length to fit all people. Volume limiting to 93db max for children when listening by bluetooth or TF card. Volume limited to 108dB max for adults with wire. [Packages]: 1 Headphones,1 USB Rechargeable Cable,1 audio cable with 3.5mm Jack and User Manual.