【Optimized Compatibility】Compatible with Kindle devices with folio-style protective cases without blocking subtitles, perfect for uninterrupted reading with full screen visibility. 【Seamless Page Turning】Provides smooth, continuous page-turning performance with no lag or skipped pages, enhancing your digital reading flow. 【Compact & Ergonomic Design】Features a slim, user-friendly transmitter and receiver that are easy to handle and store, ideal for travel or daily use. 【Rechargeable Long-Life Battery】Built-in rechargeable batteries in both the transmitter and receiver offer long-lasting performance, reducing the need for frequent charging. 【Secure Clip-On Fit】Clip-on receiver fits firmly on for Kindle devices, even with thicker cases (support total thickness up to 14.8mm), ensuring stable connection and maximum compatibility. Specifications: Model: HKRC003 Transmitter Dimensions: 86 x 29 x 23mm Transmitter Battery Capacity: 150mAh Receiver Dimensions: 30 x 65 x 23mm Receiver Battery Capacity: 300mAh