Smart Control Motorcycle Alarm Remote Keyless Start System Mobile APP Control Motorcycle Electric Motor Lock - Siren H7JDC Features: Bluetooth compatible controls the locking and unlocking of the car. Engine lock function (if the key for is out of range, the engine cannot be started). Use the mobile APP to control the locking/unlocking of the car; Use mobile app to control engine start/stop. One button start/stop; Remote start/stop system. Features: Remote engine start system, keyless entry, engine locked, alarm and emergency stop. Specifications: Material: ABS Size: approx. 7.3 x 6.5 x 2 cm/2.87 x 2.55 x 0.78 inch Color: black Package includes: 1 x Horn (125dB) 1 x Host 2 x Remote Control 1 x Manual Note: 1. Please allow 1-2cm errors due to manual measurement, make sure you don't mind before placing order.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understanding.