Avantree Multi Functional Wireless Bluetooth Speaker with FM, Micro SD Card Support - SP850 This Multifunctional portable speaker will bring you amazing listening experience. You can enjoy music or radio in kitchen room, living room and garden or take it walk around in park. Super signal and long playing time allows you enjoy it anywhere without any worries. Specifications * Bluetooth version: 2.1 * Bluetooth work time: up to 6 hours * Bluetooth operational range: up to 10 meters * Micro SD card support: MP3, WMA, WAV format * storage capacity: max 32Gb * speaker output power: 3W * speaker frequency range: 90Hz 18 kHz * charge time: about 2 hours * FM work time: up to 6 hours * FM frequency range: 87MHz to 108MHz * charge voltage: 5v-500maa * size: 130×66×32mm * net weight: 158G what’s in the box? * Bluetooth speaker * Micro USB charging cable * 3.5mm audio cable * Instruction manual warranty we offer 12 months warranty for normal use. Live online support, telephone support, and email support are available. Video user guide are available also from Avantree site. Support any issues or Suggestions, contact US via Our US toll free no, intl Number, or email US and 1 business day reply is guaranteed. We are committed to 100% customer Satisfaction.