Bluetooth communication provides reliable remote control even in bright sunlight or when there are obstacles between the commander and the camera. Bidirectional communication allows additional functionality that would not be available with a transmit-only, The RMT-P1BT provides the type of reliable operation that is essential in professional working environments, with solid Bluetooth connectivity and positive, responsive button control. Because communication is wireless rather than optical, full reliability, A high-visibility indicator LED flashes or lights continuously to show shutter, movie recording and AF status. This is an obvious advantage in situations where the operator does not have direct access to the camera being controlled., The RMT-P1BT works with the camera's built-in Bluetooth receiver, so no wired connection or add-on receiver is required. Camera connector covers can remain closed for maximum protection against dust and moisture , adding to high overall system reliability, Precise button operation with clear tactile feedback combines with a refined ergonomic design to provide sure, responsive control. The commander itself is designed to be easy to hold and operate, contributing to smooth, error-free operation.