PC Speaker - Universal - Wireless Bluetooth TF Card US DISK AUX SPLASH TEPHOP OUTDOOR SUBWOOFER WITH MIC Highlights Universal Wireless Bluetooth TF Card US DISK AUX SPLASH TEPHOP OUTDOOR SUBWOOFER WITH MIC Wireless Bluetooth TF Card US DISK AUX SPLASH TEPHOP OUTDOOR SUBWOOFER WITH MIC The product is shipped based on the main image color or size of the product page. Wireless Bluetooth Speaker TF Card U disk Aux Splashoprooor Outdoor Subwoofer with Mic Features: Support TWS (True Wireless Stereo) (Optional) Built-in Mic, with handheld (phone) functions MP3 player, could play MP3 from TF card and U disk with one U diskPassive radiator, enhanced bass Specification: General Specification Model Bakeey Model EB-305 Color Black Material Abs+PC Net Weight (G) 490G Dimensions (CM/inch) 18*52* 83MMMTECHNICAL Parameters Microphone Yes Connectivity Bluetooth / AUX Bluetooth version V4.2 TransmissionDistance 10 m Power 3W*2 SNR 75 dB Impedance 32 Frequency Response 20-20 kHz Battery Capacity 1200mAh, 3.7V Working Time (H) 8H IPPAPPAOT IPX4PACKAGE INCLUDED: 1 * BLUETOOTH TEACHING WITHOUT WIRE