Description:  1. Although you travel around the world, I'll watch your home for you, call the police on the scene, and let you know the situation at home anytime and anywhere, so that you can feel at ease.  2. High fidelity sound effect, clear and full sound, delicate and pure timbre, full of rhythm, jazz and rock music, all styles are competent. 3.The penetrating dolphin sound, no matter what kind of music, can present the sound close to the live performance to you. The built-in subwoofer shock film is like the cicada singing in the spherical cavity, and the huge sound wave even vibrates on the ground.  4. Plug and play - simple installation of wireless receiver - no wiring required.  5. Operation: mobile phone APP remote operation control, remote remote arming, disarming, timing deployment / deployment,Supports one-key setting of various languages.    Specification:  Colour: Black & White;  Material: ABS+PC;  Size: Diameter: 40cm, height: 14cm;  BT SPEAKER:  Bluetooth version: BT 5.0;  Power supply: DC 12V1A;  Output Power: 10W;  Decibel: max120db;  Signal to noise ratio: THD+N&LT;1%,f=1KHZ;  Channel: Two-channel;  Number of speakers: 3 pcs;  Material: PC+ABS;  Product size: Dia12.5cm*H14cm;  Package size: 15.8*15.2*23cm;  Weight/set: 1.1kg;    Alarm :  Operating mode: Working in 2.4G WiFi network;  Alarm volume: 3 levels adjustable;  Frequency: 433 MHz;  Wireless distance:  ≥ 100 M;  Match accessories: 100pcs wireless sensor;  Working environment: -10℃~+50℃,<90%RH;    Package Includes:  1 * Wireless Remote Control;  1 * Wireless Infrared;  2 * Door Sensor;  1 * Speaker