Bluetooth 2.1 plus EDR. Supports HFP, HSP, A2DP and AVRCP profiles. Operation range of 10 meters. 40mm 3W driver. 400mAh Li-ion battery offers approximately 4.5 hours of talk time, approximately 3 hours of music playback and up to 165 hours of standby. Listen to music with volume adjustment, previous/next/pause functions. TF card playback support Wireless Bluetooth Speaker with Aux Support, Micro SD Card Reader, Mic. for handsfree calling and LED light. Premium Metal body with Top Firing 3W RMS speaker, Dynamic Sound Effect with Crystal Clear Sound Playback.10 Meters operating Range , Upto 3 Hours of Playback Time, 20 Hours Stand by time, Rechargeable 400mAh Battery for extended usage. TF Card Slot, Aux Support, Handsfree Calling and LED light indicator.In the box: 1 x Speaker, 1 x Micro USB Charging Cable/Aux Cable, 1 x User Manual. 40mm 3W driver.Charges in 2 hours.Answer,end,reject calls.Listen to music with volume adjustment,previous/next/pause functions.