This is the Viper "Charge" the first every rechargeable sight light for the bowhunter. This light will last 4 full hours on the highest setting. This light will have a black color cap. The white caps have been discontinued. 3 brightness settings. Low, medium and high. Push button cap. Comes with adaptors and charging cord. Fits every sight on the market. This is an amazing product and a must have for every archery hunter.