Fire-Boltt Sphere has the largest screen 1.6"""" Display with a high reolution of 400*400 px and 600 NITS Peak Brightness Outdoors and Rugged design, Shockproof with full metal body. Fire-Boltt Sphere comes with a 600mAh battery for long lasting usage Fire-Boltt Sphere has a dual chamfered crown to rotate and land to functions with ease, it is shock proof and scratch resistant This smartwatch is finely designed to be scratch resistant and specifially designed for rough and tough use With Call Function Touchscreen Fitness & Outdoor, Health & Medical, Watchphone