Razer's New Mouse Costs $169.99 for 200 Hours of Battery
The Basilisk V4 Pro swaps thumb button comfort for an AI key and longer run time.
By Alina Carter ·
Gamers who want a mouse with more buttons than a simple shooter mouse but do not want a complex layout have a new option from Razer. The company released the Basilisk V4 Pro on October 23, 2026, marking the first update to the line since October 2024. The device is priced at $169.99 in black and white colorways.
The primary change in this model is the addition of an AI button. This brings the total count of programmable buttons to 12. The new key is located on the thumb side, positioned in front of the two existing thumb buttons. By default, this button opens Razer's AI prompt tool. A second new button sits beside the left mouse button and is used to switch profiles.
Tom's Hardware senior editor Sarah Jacobsson Purewal reviewed the device and noted that the button placement creates ergonomic issues. Because the AI button is the same size as the other thumb controls, it pushes the existing buttons backward. This leaves the first thumb button, labeled MB4, further away from the user's hand. Purewal found that all three thumb buttons felt slightly off position, even after remapping. She also questioned whether a dedicated AI prompt key is necessary on every peripheral.
The physical dimensions of the mouse have also changed. It measures 5.02 inches in length. This places the new profile button at the front edge of the device. Purewal stated that this location is too far to press comfortably for users with medium-sized hands and long fingers. The black version of the mouse weighs 3.53 ounces, a reduction of nearly half an ounce compared to the previous model's 3.95 ounces.
Performance specifications remain high. The device uses Razer's Focus Pro 50K optical sensor, which reaches 50,000 DPI and 930 IPS. It supports polling rates up to 8,000 Hz and connects via 2.4GHz wireless, Bluetooth, or USB-C. The fourth-generation optical switches are rated for more than 100 million clicks. In testing, the switches produced no misclicks or double-clicks.
Battery life is a key selling point. At a standard 1,000 Hz polling rate over 2.4GHz wireless, the mouse runs for 200 hours. This is an increase from the 150 hours offered by the previous model. At the maximum 8,000 Hz polling rate, the battery life drops to 54 hours. The tilt wheel offers two tactile modes with 24 and 48 steps, as well as a free-spin mode. Reviewers praised the precision tactile mode but found the free-spin setting too sensitive.
The mouse ships with a USB-A dongle, an adapter, and a 6-foot braided cable. It does not include Razer's flexible HyperFlex cable or grip tape. Razer also released the Mouse Dock V2 Pro at the same time. This accessory sells for $69.99 and includes an integrated 8,000 Hz receiver and eight RGB zones. It supports several older Razer mice in addition to the new model.
The review concludes that the Basilisk V4 Pro is a strong all-rounder. It is recommended for players who need more functionality than a stripped-down shooter mouse. The verdict highlights the lower weight and battery life as strengths. It lists the AI button's impact on thumb comfort, the price, and the slightly large size as drawbacks.
