Key Highlights

• 🔋 Swappable Battery Technology – Innovative NPS magnetic battery system lets you swap and charge instantly. Enjoy endless playback with backup batteries.

• 🎧 OWS Open-Ear Comfort – Non-in-ear design with 135° ergonomic ear arc ensures a natural, pressure-free fit.

• ⚡ Bluetooth 5.4 + Dual Connection – Quick pairing and stable streaming, connect two devices simultaneously.

• 🔊 DTS Directional Sound – Smart directional transmission reduces leakage while keeping you aware of your surroundings.

• 🎶 Immersive Three-Frequency System – 13mm wool-fat dynamic drivers + composite diaphragms deliver powerful bass, warm mids, and clear highs.

• 📞 Clear Calls Anywhere – High-performance silicon mic with intelligent ENC noise reduction for professional call clarity.

• 🏋️ All-Day Endurance – 60mAh per earbud (8h playtime at ~80% volume) + 750mAh case for extended use. With swappable batteries, your music never has to stop.

Tech Specs

Model: YIVOICE S918 (Swappable Battery Edition)
Bluetooth Chip: JL7003D4
Bluetooth Version: 5.4
Profiles: HSP / HFP / A2DP / AVRCP
Working Frequency: 2.402 – 2.480 GHz
Effective Range: ≥10 m (Class 2)
Sensitivity: −90 dBm
Input Voltage: DC 5V / 500mA
Driver: 13 mm dynamic, wool-fat composite diaphragm
Impedance / Power: 32 Ω / 15 mW
Frequency Response: 20 Hz – 20 kHz
Battery (earbuds): 60 mAh each (swappable)
Battery (case): 750 mAh
Playtime: ≥8 hours per charge (80% volume); extended with spare batteries
Charging Time: ≥2 hours
Standby Time: >90 hours (connected)
Product Size: 27.15 × 78.5 × 90.75 mm
Net Weight: 99.5 g
Materials: ABS + Silicone + Surface Spray Oil

Why Choose S918?

• Unstoppable Playtime – Swappable batteries mean you’ll never run out of power during long workouts or travel.

• Ergonomic Comfort – 135° ear arc matches the human ear for a secure fit that won’t slip during exercise.

• Smart & Stable – Bluetooth 5.4 provides fast connection, dual-device support, and lower latency.

• Privacy & Awareness – DTS directional sound keeps audio focused toward you, reducing leakage while keeping ears open to the environment.

• Premium Sound – Balanced tuning with deep lows, detailed mids, and sparkling highs.

In the Box

• YIVOICE S918 OWS True Wireless Headphones (L/R)

• Charging Case (750 mAh)

• Swappable NPS Batteries

• USB-C Charging Cable

• Quick Start Guide

Compatibility

• Works with all Bluetooth-enabled smartphones, tablets, laptops, and watches.

• Supports simultaneous dual-device pairing.

• Compatible with HSP / HFP / A2DP / AVRCP profiles.

FAQs

Q: How does the swappable battery work?
A: Each earbud has a detachable battery module. Snap in a fresh one with magnetic NPS quick attach — takes just one second.

Q: Is this safe for workouts?
A: Yes. The open-ear OWS design + ergonomic hooks keep the earbuds secure and pressure-free, even during intense training.

Q: How is the sound compared to in-ear earbuds?
A: While maintaining open-ear awareness, the 13mm drivers + acoustic tuning ensure rich bass and balanced clarity, rivaling traditional in-ear models.