Pixel-precise digital pencil for all iPad models (2018 and later). Rechargeable via USB-C. Technical Specifications Protection: 4 ft (1.2 m) drop Power and Connectivity Lithium battery Up to 7 hours of active writing time To turn on, slide the button down towards tip After 5 seconds, lights turn off When idle, the LED lights will turn on briefly to show battery life when it detects movement, transitioning from idle to active writing mode Battery life indicator Battery > 66%, 3 green LED Battery > 33%, 2 green LED Battery >15%, 1 green LED Battery <15%, 1 red blinking LED Charge via iPad USB-C cable After 5 minutes of inactivity, Crayon will switch to idle mode To turn off, slide button up towards charging port To charge Charge to 33%, 3 LED blink continuously Charge to 66%, 1 LED is solid green, 2 LED blink continuously Charge to 99%, 2 LED are solid green, 1 LED blink Charge to 100%, 3 solid green LED