Haptics and vibration effects are relatively new features being implemented in a growing number of mobile and wearable devices. Given the unique needs of mobile and wearables devices in terms of power consumption, form factor and haptic/vibration performance, selection of the optimum haptic solution may differ from other consumer products. Among the alternatives, there are mainly three types of actuators available: LRA, ERM, and BLDC actuators. Each of the actuator types offer different trade-offs in terms of power consumption, vibration strength, and form factor. The following sections expand on the trade-off among different actuators and circuit implementation.