Kuulokkeet Energy Sistem Style 4

True Wireless Style 4 earphones provide portable wireless audio with a compact ergonomic design and a charging case that extends total battery life up to 25 hours (5 hours per earphone plus 20 hours from the case). Use the ESmart Connect app to customise sound, find misplaced earbuds and receive OTA updates. Built-in Voice Assistant and touch controls allow hands-free operation while Bluetooth® 5.1 ensures stable connectivity and automatic synchronisation between earbuds.

Advantages

Compact, lightweight design for comfortable, long-wear use and easy storage in a pocket or bag. Long combined battery life with fast on-the-go recharging in the included case. Customisable audio and settings via the ESmart Connect app, including sound equalisation and Find my earbuds. Voice Assistant support, touch controls and hands-free calling enabled by Bluetooth® 5.1 and True Wireless automatic synchronisation.

Key specifications

• Model: True Wireless Style 4
• Battery life: up to 5 hours per earphone; up to 25 hours total with charging case (5 h + 20 h)
• Connectivity: Bluetooth® 5.1; True Wireless with automatic synchronisation
• Controls: Touch Control
• App: ESmart Connect (sound equalisation, Find my earbuds, OTA updates)
• Features: Voice Assistant support, hands-free function
• Design: Compact, ergonomic, lightweight with charging case for portable recharging

How to use

Charge both earbuds in the supplied case before first use. Pair the earbuds to your device using Bluetooth® 5.1 and follow on-screen prompts; the earbuds synchronise automatically. Install the ESmart Connect app to adjust equaliser settings, enable Find my earbuds and apply OTA updates. Use touch controls on the earbuds to play/pause, skip tracks, answer calls and activate the Voice Assistant. Keep the earbuds in the case when not in use to recharge and extend battery life.

Recommendations

For best performance, ensure the charging case is regularly charged and keep the ESmart Connect app updated. Use the Find my earbuds feature when you misplace an earbud and adjust the equaliser to match your preferred sound profile.