The NanoShift S4 delivers clear, balanced sound in a compact design built for comfort and discretion. Its ultra-small earbuds rest lightly in the ear, making them ideal for sleep, study sessions, office work, and everyday use where minimal bulk is essential. The sealed in-ear fit helps isolate sound while keeping the profile nearly invisible.
A smooth sliding case protects the earbuds and keeps them ready throughout the day, paired with stable Bluetooth connectivity and simple onboard controls. Whether you're winding down at night or staying focused during the day, the NanoShift S4 offers a quiet, comfortable listening experience in a sleek, pocket-size form.
Specifications
Model: NanoShift S4
Type: true wireless in-ear earbuds
Bluetooth Version: 5.4
Profiles: HFP / HSP / A2DP / AVRCP
Codecs: AAC, SBC
Active Noise Cancellation: yes (with noise-isolating fit)
Battery (Case): 300 mAh
Battery Life (Standby): up to ~480 hours (usage dependent)
Charging Time (Earbuds): about 1 hour
Charging Method: sliding charging case via USB-C
Charging Voltage: DC 5 V
Maximum Wireless Range: up to 10 m (open space, usage dependent)
Driver Diameter: 14.2 mm hybrid driver
Impedance: 32 Ω
Sensitivity: 125 dB (approx.)
Microphone: built-in mic with voice assistant support
Controls: onboard button controls for volume, playback, and calls
Sound Isolation: in-ear sealed design
Water Resistance: waterproof (rated for everyday moisture and sweat)
Wireless Type: Bluetooth true wireless
Weight (Total): ~46 g (case + earbuds)
Materials: plastic housing with silicone ear interface
Included: earbuds (pair), sliding charging case, USB-C cable, user manual
FAQs
Are these comfortable enough for sleeping?
Yes. The NanoShift S4 is designed with a low-profile, lightweight shape that sits deeper and flatter in the ear than typical earbuds, making them more suitable for resting on a pillow when sized correctly.
Do they help block outside noise?
The in-ear seal and active noise-cancelling support help reduce ambient sound, making them useful for studying, office work, travel, and night-time listening. They will not completely eliminate all external noise but can significantly soften it.
Can I use them for workouts or walking outside?
Yes. The waterproof rating and secure in-ear fit make them suitable for light workouts, commutes, and daily movement. They should not be submerged in water.
How long does the battery last?
Actual listening time varies with volume and usage, while the charging case extends total standby time up to around 480 hours. The earbuds recharge in about one hour inside the case.
Are they compatible with both iPhone and Android?
Yes. NanoShift S4 connects via Bluetooth and works with most modern smartphones, tablets, and laptops running iOS, Android, and other common platforms.
What is the sliding cover for?
The sliding cover protects the earbuds, keeps dust out of the charging contacts, and gives the case a smooth, compact feel that’s easy to open and close with one hand.
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