Features 1、Adopting ABS plastics, excellent impact resistance, heat resistance, low chemical resistance and good electrical properties. 2、Adopt KB‑PCB double‑sided circuit board with good quality and long service life. 3、The sensitive central axle roller can be touched to capture the signal and send out the beeping sound and light warning. 4、The indicator LED lamp is always bright and clear. 5、Low standby power consumption, energy saving and environmental protection. Specification Features: Adopting ABS plastics, excellent impact resistance, heat resistance, low chemical resistance and good electrical properties. Adopt KB-PCB double-sided circuit board with good quality and long service life. The sensitive central axle roller can be touched to capture the signal and send out the beeping sound and light warning. The indicator LED lamp is always bright and clear. Low standby power consumption, energy saving and environmental protection. Specification: Condition: 100% Brand New Material: ABS Main Color: black Receiver Battery: AAA battery (Not Included) Launcher Battery: 12V LR23A battery (Not Included) Launcher size: approx. 11.5*3.8cm/4.5*1.5inch Receiver size: approx. 9.6*5cm/3.8*2inch Package List: 4 * Launcher 1 * Receiver 1 * Manual (Battery Not Included) Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List