The Rexton BiCore C R-Li T is a pair of premium Receiver-In-Canal (RIC) rechargeable hearing aids sold exclusively at Costco Hearing Aid Centers. This bundle includes two BiCore C R-Li T hearing aids and a Connexx Travel Charger. The "R-Li" designation indicates lithium-ion rechargeable technology, and the "T" model adds a built-in telecoil for compatibility with hearing loop systems found in theaters, places of worship, and public venues.

Each hearing aid features Rexton's Speech Preservation Technology, which continuously analyzes the sound environment to reduce background noise and emphasize speech clarity — particularly effective in noisy, complex listening environments. An ultra-fast binaural link keeps both hearing aids synchronized in real time so they can react together to changes in sound. The aids are built to Rexton's Lifeproof standard, tested to withstand everyday drops, moisture, rain, vibration, and UV exposure. They also carry ATEX certification, confirming they are intrinsically safe for use in potentially explosive environments such as paint and chemical manufacturing, petrol stations, and grain mills.

On a full charge, the R-Li T model delivers up to 39 hours of use without streaming or 36 hours with 5 hours of daily Bluetooth streaming. A 30-minute fast charge provides up to 9 hours of use without streaming. The included Connexx Travel Charger is portable, stores up to 3 full charges without a wall outlet, and supports fast charging via USB-C — making it practical for travel. The hearing aids stream directly to iPhone via the Made-for-iPhone (MFi) protocol and to compatible Android phones via the ASHA protocol. Remote adjustments and personalization are available through the Rexton app. The aids are available in 10 color options.