*Excludes battery weight* 60g Ultra-lightweight Design* for smooth control while gaming on the go Its ambidextrous shape allows for easy handling and deft control without sacrificing strength, and its small, portable design makes it the perfect gaming companion on the go. Razer HyperSpeed Wireless and Bluetooth offer two wireless modes: With Razer HyperSpeed Wireless' smooth, low-latency performance, you can get the most out of your after-hours gaming and extend its battery life for work via Bluetooth. For extended performance, the battery has a lifespan of up to 950 hours: * Measured with a 2nd-generation AA lithium battery, it can last up to 950* hours on Bluetooth and up to 425* hours on Razer HyperSpeed Wireless, making it ideal for both work and gaming.