Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances (using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security. Y When performance is your priority, rely on proven, trusted technology. With the cylindrical lithium-ion battery cell your laptop gets stable power that’s great for high-performance devices. Lithium-Ion (Li-Ion) Keyboard backlit Y HP 9D1D6LT, AMD Ryzen™ 7, 35.6 cm (14"), 1366 x 768 pixels, 16 GB, DDR4-SDRAM, FreeDOS HP 9D1D6LT. Processor family: AMD Ryzen™ 7, Processor model: 5825U. Display diagonal: 35.6 cm (14"), HD type: HD, Display resolution: 1366 x 768 pixels. Internal memory: 16 GB, Internal memory type: DDR4-SDRAM. On-board graphics card model: AMD Radeon Graphics. Operating system installed: FreeDOS