Welcome to the Even Insider.
In this new series, we’re diving deep into the product and sharing how we build our devices - from engineering breakthroughs to software challenges and the design thinking behind them. This isn’t the marketing surface; it’s the work underneath. We begin with Even G2.
While the Even G2 garners attention on its new exterior, the most significant changes are ones that cannot be spotted with a glance. We refactored core parts of the engineering framework to solve foundational issues from the previous generation: low-latency data handling, reliable wireless behavior, and sustainable energy performance. Underneath, Even G2 isn’t just a refinement of Even G1. It’s a rebuild.
Antenna Switch: Re-designed layout, cleaner signal.
The temple tip clusters some of the device’s most critical components - the antenna, the processor, and the battery. On Even G1, this component stacking arrangement created interference. The operating frequency of the processor leaked into the LDS antenna’s active field, suppressing signal strength and affecting real-world stability and latency.
For Even G2, we re-designed the internal environment instead of only upgrading the parts. The LDS antenna and the PCBA that hosts the chip were repositioned. High-current and high-frequency components were separated, and the internal stacking order was rebuilt to reduce electromagnetic noise.
By separating these elements at the structural level, interference drops dramatically. The antenna maintains consistent output instead of fighting noise generated by its neighbors. Its behavior becomes predictable, and signal purity improves in measurable ways, resulting in better directionality, stronger noise resistance, and roughly a 10% gain-efficiency improvement.
Processor Swap: Efficient core, steadier output.
To support near-real-time I/O with Even G2 & Even R1 and improved system stability, we selected a new processor for Even G2. The goal was not simply to increase raw power, but to make wireless behavior consistent under load. Once we made the switch, the results were clear.
Even G2’s new processor delivers close to 9 dB more transmission power, which translates into almost 3x the reliable range of Even G1 - roughly 28 meters in real-world testing*. In practice, this means the connection stays stable even when the phone is farther away, kept inside a bag, or behind a wall.
Sensitivity - the reception side - has also improved by 3-4 dB. Even G2 is able to maintain weak signals that Even G1 would lose. In day-to-day use, this prevents sudden disconnects, audio dropouts, and latency spikes, even in congested radio environments or when the user’s hand covers the temple. In testing, behavior was up to 700% more stable than before.
*Tested with iPhone 17 & Samsung Galaxy Z Fold 5.
Wiring Addition: Proven tech, reimagined performance.
Smart glasses require both displays to stay aligned at all times. Even G1 achieved this with a complex architecture: phone to left, phone to right, and left to right to each other over wireless. This design consumed unnecessary radio bandwidth simply to maintain internal synchronization. When acknowledgment packets were delayed or lost, visible desync could occur between the two eyes.
Even G2 replaces this logic with a zero-dependency design - HAO. A Dual-Sided Communication FPC (0.1 mm) runs through the frame and links both sides directly. Left and right no longer rely on wireless transmission to stay in sync; they communicate physically through the FPC.
With this change, internal synchronization no longer occupies radio bandwidth. What used to require three wireless channels now requires two. The left and right displays no longer wait for acknowledgement over BLE, and internal sync no longer competes against external data. Bluetooth now handles only external communication, and display sync is guaranteed rather than dependent on packet timing.
The result is smoother OS animations, lower energy consumption, and the practical removal of left-right lag. This architectural change also contributes to Even G2’s two-day battery life, and desync occurrences have dropped to under 1% in quality assurance process.
Software Re-write: Optimized stack, amplified Performance.
With the new hardware foundation in place, we rewrote the firmware on both Even G2 and Even R1. This allowed the communication stack to operate according to the new architecture rather than working around Even G1’s limitations. We also moved from Bluetooth 5.2 to Bluetooth 5.4, which introduced features that directly enhance connection stability.
The rewrite improves how the device handles packet recovery under interference, how it responds during real-time I/O, and how multi-device behavior remains stable when Even R1 joins the loop. Bluetooth 5.4’s PAwR (Periodic Advertising with Responses) capability allows Even G2 and Even R1 to stay connected efficiently without oversaturating the channel. The advantage isn’t peak throughput; it’s predictable behavior in conditions that typically degrade consumer wearables - from crowded radio environments to partial physical obstruction.
In practice, Even G2 maintains stability without demanding additional power or renegotiating its connection. The user never needs to notice the underlying effort - the system simply stays responsive. Under Bluetooth 5.4, packet collisions drop by 50%, energy cost decreases by 25%, and recovery from interference shortens by 35%, all contributing to a connection that behaves predictably even in challenging environments.
What’s Next?
Even G2’s wireless architecture is the product of dozens of small, deliberate decisions working together, each aimed at building a system that behaves predictably under real-world pressure. This chapter focused on the parts that shape connectivity and responsiveness.
In the next entry, we’ll turn to the other hardware changes inside Even G2 - the structural redesigns, material shifts, thermal improvements, and optical adjustments that don’t directly influence connection, but quietly define how the Even G2 feels, wears, and performs over time.