Mobile phone: Android5.0 or above, screen resolution of 1080P or above (currently mainstream mobile phone basically reach, temporarily do not support s). Communication mode: Connect the same router or robot to the hot spot of the phone (the phone should have Bluetooth function at the same time) Three modes control Communication distance: 1. The hotspot mode depends on the WiFi power of the mobile phone, and the non-blocking router mode depends on WiFi about 30-50m. 2. The APP control depends on the WiFi power of the mobile phone, and in the case of no obstruction and bad environment,APP control distance about 5-30m. 3. The Wifi handle control depends on the WiFi power of the wifi handle, and in the case of no obstruction and bad environment,The Wifi handle control distance about 5-10m. Coverage area: in the office building with good coverage, distance can be ignored if is unobstructed. Battery and endurance: the battery is 3.7V lithium battery, the capacity is 200mAH, a charge continuous use time of about half an hour Driving speed: 5cm per second (adjustable) Light brightness: stepless adjustable. Specifications: B:remote control Color: As Shown Material: Plastic+Metal Package Contents: 1 * Robot Car 1 * Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.