E13 Mini Portable Wireless Bluetooth Speaker Stereo Speakerphone Radio Music Subwoofer Column Speakers with TF FM（Blue） Features: 1. Good sound quality, built-in dual 2x3W driver speakers 2. Long battery life, high capacity 1200mAH rechargeable battery 3.4.2 Seamless connection, the latest and advanced Bluetooth 4.2, lower power consumption, but provides expansion 4. Main functions: Bluetooth, call, TF card, AUX, FM, USB Specifications: 1. Support A2DP, AVRCP, manual configuration files. 2.Bluetooth version: V4.0+EDR Class 2 3. Working range: up to 10metes 4. Speaker: 52mm 5. Speaker output: 2 * 5 w 6.Frequency response: 85 hz-20khz 7. Signal to noise ratio: ge90dB 8. Distortion: le0.5% 9.Battery voltagecapacity: 1200 mah 10.Battery charging voltage: 5 vplusmn0.5v 11.Battery charging time: 2 hours 12.Play time: 3-4 hours 13.Standby time: 160 hours 14. Product size: 23*85*88MM Packing list 1 X Bluetooth speaker 1 X charging cable 1 X AUX audio cable 1 X Chinese and English manual