The Trilium BTR 1 is a Bluetooth wireless keyboard that essentially lets you pair it with up to three different devices simultaneously. The Alcatroz Trilium BTR 1 is a must-have if you're an owner of multiple electronic devices. It's compatible with so many platforms. With the capability to Multi-Pair, you can switch between devices easily. This is a plus since it makes multi-tasking easy. Technical Specifications:- Bluetooth Specifications: Bluetooth 3.0. Operating Range: Up to 10 meters. Modulation System: GFSK. Standby time: 90 days. Charge time: