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1. NIGNTINGALE
Full Metal In-Ear Earphones
Powerful Deep Base

2. NIGNTINGALE
Excellent full metal design
Full metal design goes through every component: cavity,
splitter, microphone, plug... ... Unified styles looks
elegant and delicate.

3. NIGNTINGALE
Delicate embossed diamond
texture
The cavity, remote control and plug are embossed with
delicate diamond texture, it is not only shows a unified
style, but also gives Nightingale a brilliant and beautiful
look.

4. NIGNTINGALE
Military-grade hard
anodizing under ultra-low
temperature
All metal surfaces are adopted military-grade hard
anodizing under ultra-low temperature, the
oxidation film’s thickness up to 60~200 microns,
with strong hardness and wear resistance; the
melting point up to 2320 K, with excellent insulativity,
which can compare with national defense level.

5. NIGNTINGALE
Ultra-precision CNC
machining process
All metal parts of Nightingale are adapted CNC
machining process, unlike usual CNC cutting, its high
machining accuracy ensures every product can meet the
high quality standards of GGMM.

6. NIGNTINGALE
With well-selected Titanize
composite diaphragm
With well-selected titanize composite diaphragm, which
is special used for High-end headphones, its hardness is
better than usual diaphragm, the sound reproduction is
better, the high-pitch is still clear even in the powerful
bass effect.

7. NIGNTINGALE
Excellent neodymium
driver unit
Neodymium driver unit can compare with BEATS.
The whole sounds performance is warm and strong,
balanced tone can reproduce pure and clear vocals
and instrumentals.

8. NIGNTINGALE
Sealed metal cavity
reproduces music essence
Diamond cutting craftsmanship for full metal cavity, can
bring a stable cavity construction and avoid any
deformation problem after long-time use. And the whole
sealed metal cavity can ensure sound quality, reproduce
the music essence and bring you immersive experience.

9. NIGNTINGALE
Using 99.995% purity OFC wire
The cable is composed of 99.995% purity OFC wire, high tenacity Kevlar wire and high elasticity TPE
coating, which ensures high fidelity sound transmission, good tensile stength and wear resistance.
Kavlar wire
with high tensile strength.
Copper wire is several times
more than
Durable TPE
OFE

10. NIGNTINGALE
Original designed adjustable
metal splitter
Unlike common earphone splitter in the market, GGMM
Hummingbird adopts metallic splitter. Adjustable structure
design offers anti-winding protection, and more convenience
for users.

11. NIGNTINGALE
Gold plated plug with Hi-Fi
sound transmission
Special designed plug with gold plating, which can ensure
Hi-Fi sound transmission and bring better sound effect. The
metal connector is embossed with pattern to follow the
whole design, which is anti-skid and delicate.

12. NIGNTINGALE
Super soft double color
silicone earbuds with excellent
sound insulation
Top-graded double-color silicone earbuds are composed of
two different hardness silicone: The inner part adopts hard
silicone which can avoid sound distortion; the outer part uses
soft silicone which can perfectly suits the ear to ensure good
sound insulation and comfortable long-time wearing.
Provide three sizes S/M/L earbuds to meet different
demands.

13. NIGNTINGALE
Metallic One-Key inline
remote
With well-selected metal material, the simple one-key inline
remote is delicate and durable.
It is compatible with iOS devices and most Android devices.
The button supports phone answer/ hang up and music
play/ pause/ forward/ return functions.
Built-in noise-cancelling microphone can ensure high-quality
calls.

14. NIGNTINGALE
Drivers Unit 2* ￠8.0mm Impedance 16ohm±15%
Frequency 20-20KHz Sensitivity ( 1 KHz) 93dB±3dB
Cable Length 120cm Plug ￠3.5mm (gold plated)
Form Factor In-ear Inline remote Yes
Warranty Period 1 year Color Titanium, Golden
Specifications

15. NIGNTINGALE
Special premium
packaging
Include GGMM original designed portable
genuine leather pouch