Wireless headphones in a lightweight design with radio ST8 is a nice set of headphones that, despite their low weight (167 grams), provide sublime sound quality. Listen to your favorite music wirelessly from your mobile phone (range up to 10 meters) or insert a TF card into the headphones and play your MP3 files without having to connect other players. Here you get really good sound quality wrapped in a simple but durable design that is suitable for everyday life, where you can experience complete freedom, by enjoying music without wires. On the headphones themselves you can use all the functions: there are buttons where you can select the source and volume control. You can change numbers and rewind, On/Off button and button to answer incoming calls. Compatible with Android devices, IOS (compatible with iPhone and compatible with iPad) and Windows devices. Product information Weight: 167 g Memory: TF card CE approved: yes Talk time: about 5 hours Music time: about 5 hours Distance: up to 20 meters Included: USB charging cable Standby time: up to 120 hours Connection technology: Bluetooth v5.0 Model: ST8 #sp-ea-1507547 .spcollapsing { height: 0; overflow: hidden; transition-property: height;transition-duration: 300ms;}#sp-ea-1507547.sp-easy-accordion>.sp-ea-single {margin-bottom: 10px; border: 1px solid #e2e2e2; }#sp-ea-1507547.sp-easy-accordion>.sp-ea-single>.ea-header a {color: #444;}#sp-ea-1507547.sp-easy-accordion>.sp-ea-single>.sp-collapse>.ea-body {background: #fff; color: #444;}#sp-ea-1507547.sp-easy-accordion>.sp-ea-single {background: #eee;}#sp-ea-1507547.sp-easy-accordion>.sp-ea-single>.ea-header a .ea-expand-icon { float: left; color: #444;font-size: 16px;} Questions about prod