Features:Brand new and high qualityMicrophone for listening through walls， floors， walls， doors and ceilingsHighly Sensitive， carefully adjust audio slowly， as not to cause discomfort to your ear-budsThis product is being sold as an investigative tools for law enforcement or licensed investigatorsAnyone else ordering this device should only be ordering it as a simple toy since many contries strictly prohibit ownership of devicesPrimary Function: Audio Listening DeviceMaterials: Molded Plastic with Internal Sound AmplifierColor: blackOnboard Buttons/Slots: 3.5mm Earphone Jack USB IN Sensor ON/OFF Switch Button with volume DialPower: Built In Rechargeable BatterySize: 6cm x 3.6cm x 3.6cm - 2.36inch x 1.42inch x 1.42inchPackage Included:1 x Listening Device1 x Earphones1 x USB Cable1 x Power ChargerNO Retail Box. Packed Safely in Bubble Bag.