Features: Portable-strong flashlight illumination module, visible professionalism. IP56 waterproof and dustproof grade. Highly scalability for-sports. Built-in two pieces of 18650 battery, 1000-Lumen adjustable brightness and 5-Watt 600-meter distance light range. Various lightening modes are available for discriminating ambiance, ''Bright light'', ''Low light'', ''SOS-'', ''Breathing light'', ''Strobe-'', five kinds of light modes can be shifted-with one button. 5200mah high-intensity and high-quality battery cells, play-music for 30 hours and illuminate with bright light for 20 hours. FM radio station search with one button is applied universally. hrough a built-in spiral-antenna, JAKCOM- OS2- allows the users to automatically search for local public broadcastings anywhere in the world. Equipped with Wyeth- threaded connector British standard 1/4-20,JAKCOM- OS2- can be-connected to many standard market accessories. Specifications: Material:Metal Size:Approx.15.6x5.2x5.2cm/6.14x2.04x2.04inch Color:Black Maximum-power: 5W Speaker Impedance: 4 Frequency Response Range: 100Hz 18000Hz Signal-to-noise ratio: greater than 85dB Memory card music format: MP3, WMA and other mainstream music formats Working temperature: -18 80 Speaker charging input standard: not less than 5V 1A Power banks mode output voltage: 5V Mobile power mode output current: 1A Bluetooth-compatible pairing distance range: 30cm Bluetooth-compatible connection transmission range: 10m Waterproof and dustproof level: IP56 Bracket interface thread standard: inch 1/4-20 Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Wireless Speaker 1x Micro USB-Charging Line 1x Instruction