Universal Compatibility: Works seamlessly with most smartphones and tablets. Multi-Function: Use it for taking photos, starting and stopping videos, or navigating through presentation slides and e-books. Portable & Compact: Easily fits in your pocket or on a keychain. Long Battery Life: Enjoy extended use without frequent recharges. Whether you're a professional photographer or a social media enthusiast, this Bluetooth remote control enhances your ability to capture and share your moments effortlessly. Compatible with popular platforms, it's an essential tool for content creators. Specifications: Product name: Mobile Phone Bluetooth Ring Remote Control Transmission frequency: 2.402-2.4835 GHz Applicable system: Supports iOS 15.0 / Android 8.0 and above Operating voltage: 3.9-4.2V Bluetooth version: Bluetooth 5.3 Operating temperature: 0-50 Color: Black Material: ABS Note: Due to different production batches, there may be slight variations in product appearance and printed text, which do not affect functionality. Light reflection and differences in display screens may cause the color of the item in the picture to vary slightly from the actual product. Measurement error is +/- 1-3 cm. Package Contents: 1 x Page Turner Only the items listed above are included; other accessories are not included.