Cuffie 4smarts SoundGlasses Sport 2

The 4smarts SoundGlasses Sport 2 are Bluetooth smartglasses with a semi-rimless design that combine photochromic lenses, open speakers and simple physical controls. The lenses tint automatically to changing light and provide ISO-certified UV protection, while the open-speaker design lets you listen to music and take calls without fully isolating you from your surroundings. With a 120 mAh battery, USB-C charging and a lightweight 35 g frame, these glasses are intended for everyday wear, commuting and outdoor activities.

Advantages

Photochromic lenses adapt to light conditions and include ISO-certified UV protection for reliable eye shielding. The open-speaker concept delivers clear audio and call quality while keeping environmental awareness. Three side buttons offer tactile control for volume, track skipping and call handling without using a phone. USB-C charging provides a modern, quick recharge (about 2 hours) and up to 6 hours playback. At only 35 g the frame is ultralight and designed for a secure, comfortable fit during movement.

Suitable for

• Commuting and public transport
• Outdoor sports and recreation
• Workplace use where situational awareness is needed
• Travel and sightseeing
• Hands-free calls and casual audio listening

Key specifications

• Product: 4smarts SoundGlasses Sport 2 (Bluetooth smartglasses)
• Battery: 120 mAh, approx. 2 h recharge time
• Playback time: up to 6 hours (music, calls, podcasts)
• Connectivity: Bluetooth 5.3, supports A2DP and HFP profiles
• Controls: three physical side buttons (volume, track, calls, voice assistant)
• Design: semi-rimless frame, colour: white
• Weight: 35 g
• Cable length (included): 0.3 m (USB‑C charging cable)
• Features: photochromic lenses with ISO-certified UV protection, open-speaker design, built-in speaker(s) and microphone

How to use

Charge the glasses with the supplied USB-C cable until fully charged (about 2 hours). Pair the glasses with your Bluetooth device using the standard pairing procedure for Bluetooth 5.3 devices; the glasses support common audio profiles such as A2DP and HFP. Use the three side buttons to adjust volume, skip tracks, answer or end calls and activate your voice assistant. Wear the glasses as regular eyewear; the photochromic lenses will adjust automatically to changing light conditions while the open speakers provide ambient-aware audio.

Recommendations

For optimal battery life, fully charge before first use and avoid exposing the glasses to extreme temperatures. Use in environments where situational awareness is important—open speakers let you hear traffic and announcements while listening to audio.