The Buds Ace are true wireless in-ear earbuds with stereo speakers, meaning there are no cables or neckband connecting the two units. They carry an IPX4 rating, making them resistant to sweat but not suited for submersion or heavy water exposure. Wingtips are not included for additional ear stability.
The earbuds use 10 mm drivers and cover a frequency range of 20 Hz to 20000 Hz, spanning the standard audible spectrum. Passive noise reduction is present, helping to block some ambient sound through the physical fit of the earbuds, though active noise cancellation is not included. The drivers do not use a neodymium magnet.
Each earbud holds a 40 mAh rechargeable battery delivering up to 6 hours of playback, while the 400 mAh charging case extends total usage to 29 hours before a wall charge is needed. A full charge takes 1 hour, and a battery level indicator is on hand to keep track of remaining power. Wireless charging is not supported, so the case relies on a wired connection for recharging.
The earbuds connect wirelessly via Bluetooth 5.3 with a maximum range of 10 m and an audio latency of 88 ms. No advanced audio codecs are supported — aptX, aptX Adaptive, aptX HD, aptX Low Latency, aptX Lossless, aptX Voice, AAC, LDAC, and LDHC are all absent, meaning the connection relies on the standard Bluetooth audio transmission. Fast pairing and NFC pairing are not available, so setup follows the standard Bluetooth discovery process. USB-C is present for charging purposes.
The Buds Ace support fast charging and can be used as a headset, with a mute function available during calls and an on-device control panel for managing playback and other inputs. Voice prompts are included to guide the user through connections and status updates, and a travel bag comes in the box for portability. Ambient sound mode, in/on-ear detection, a find-device feature, an in-line control panel, and a body temperature sensor are all absent from this model.
The earbuds are equipped with 4 microphones in total, and noise cancellation is applied to the microphone input to help reduce background sound during calls and voice interactions.