Important: R1 SE+ is the newer version of the R1 SE and it comes with a longer battery life Now the new series of VGN Dragonfly R1 has been launched. These mice are ultralight and have a comfortable grip. The R1 Pro has the PAW3395 which provides incredibly smooth tracking at 650 IPS and up to 26000 DPI. Perfect for playing a long gaming session with SmartSpeed high-speed wireless communication. Experience 4K Hz (4K Dongle purchased separately) and up to 75h battery time (1000Hz). R1 SE, R1, R1 Pro, and R1 Pro Max are the four models that make up the series. The R1 SE and R1 are the entry-level models, as you might have guessed from the naming convention, while the R1 Pro and R1 Pro Max have the full feature set. R1 SE and R1 offer a polling rate of 125-2000 Hz and weigh 51g, the R1 model is a bit sharper than the R1 SE. R1 Pro offers 125-4000 Hz and weighs 48g, experiencing incredible battery life and agility. R1 Pro Max offers 125-4000 Hz and weighs 54g, this mouse has the ultimate battery with up to 150h (1000Hz) playtime. (Extra skates and 4K Dongle purchased separately) Souris Sans-Fil Capteur PixArt PAW3395 SE DPI : 18000 DPI Accélération : 40 G 400 IPS Taux de rafraichissement : 2000 Hz Dimensions : L 120,6 x l 64 x H 37,8 mm Poids : 51g Autonomie : 70 heures (en 1000Hz)