Specifications:General Specification Brand BlitzWolf® Model BW-F3 Color Blue｣ｬ Yellow Product Weight (g) 425g Gross Weight (g) 520g Dimensions (mm/ inch) 173*73*49 mm/ 6.8* 2.8* 2 inchTechnical Parameters Connectivity 3.5mm Audio cable + Bluetooth connection Output 5W*2 Driver Unit 40mm Horn Dual magnet 18-core horn S/N Ration ≥75dB Impedance 40dB Frequency Response 160Hz-20KHz Bluetooth Version BT 4.0 Waterproof Level IPX5 Hand Free Function Support Mic Function Support Battery 3.7V/ 2000mAh Charging Time 4~5 hours Working Time 6~8 hours Transmission Range ≤ 10m Interface Micro USB Charging port｣ｬ 3.5mm Audio SlotPackage Included: 1 * BlitzWolf® BW-F3 Waterproof Speaker 1 * Charging Cable 1 * 3.5mm Audio Cable 1 * User Manual 1 * Warranty Card