The Biotic Grenade is a small, spherical device with a sleek, high-tech design, featuring a metallic blue casing with glowing yellow accents that pulse with energy. Its surface is smooth and slightly reflective, with intricate circuit-like patterns etched into the metal, suggesting advanced technology. The grenade emits a soft, luminous glow, indicating its biotic energy charge, and has a compact, easy-to-grip form factor with a subtle weight to it, making it feel substantial yet practical for quick throws.