The JJC BTR-S1 Bluetooth remote control is a professional camera accessory for mirrorless Sony cameras, providing reliable wireless shutter control with minimal latency. This compact remote uses Bluetooth connectivity, eliminating the need for cables or additional receivers, ensuring precise camera control. With an exceptionally fast response time of just 0.05 seconds shutter delay, it allows for accurate timing in landscape photography, architectural shots, night sky photography, group portraits, and still image sequences. The device features comprehensive control functions, including manual focus adjustment buttons, a configurable C1 function button, video recording start/stop control, electronic zoom adjustment, and digital zoom management. For photographers in Bulb mode, the remote allows for opening and closing the shutter with a single press instead of continuous button pressing. The LED display provides clear connection status confirmation, while the robust construction offers resistance to dust, moisture, and extreme temperatures ranging from -10°C to 40°C, making it suitable for various environmental conditions. It is compatible with Sony camera models including a6100, a6400, a6600, a7 III, a7R III, a7R IV, a9, a9 II, DSC-RX0 II, DSC-RX100 VII, a7C, a7S III, and ZV-1. This remote measures approximately 60 mm in width, 30 mm in height, and 15 mm in depth, weighing 25 grams. The white surface provides high visibility in various lighting conditions, and the ergonomic design ensures comfortable handling during extended photography sessions. It is powered by a standard CR2032 battery, offering extended operating time for professional photography applications.