... response150HZ – 16KHZCertificateCE/FCC/BQB/UL/NCCProfileA2DP/HFP/HSPBatteryBuilt-in rechargeable batteryWorking rangeRange up to 33FT (10M)FeatureMini, portable, ... scratching; With or without hollow for option Works with any compatible stereo Bluetooth deviceFrom a range of up to ... speaker, wirelessly stream music from any compatible stereo Bluetooth device such as your mobile phone, notebook, iPhone ...