Specifications - Sennheiser CX 400BT Series Instruction Manual

Specifications

Specifications
CX 400BT True Wireless
Model: CX400TW1, CX400TW1 C, CX400TW1 L, CX400TW1 R
Wearing style
Ear coupling
Frequency response
Transducer principle
Transducer size
Sound pressure level (SPL) 114 dB (1 kHz/0 dBFS)
THD (1 kHz, 94 dB SPL)
Microphone principle
Microphone frequency
response
Microphone pick-up pattern
(speech)
Power supply
Operating time
Charging time of
rechargeable batteries
Temperature range
Relative humidity
Magnetic field strength
Weight
Bluetooth
Version
Transmission frequency
Modulation
Profiles
Output power
Codec
true wireless stereo earphones
ear-canal, closed-back
5 Hz to 21 kHz
dynamic
7 mm
< 0.08 %
MEMS
100 Hz to 10 kHz
2-mic beamforming array
built-in Lithium rechargeable
batteries, 3.7 V
earbuds: 54-60 mAh
charging case: 400-420 mAh
USB charging via USB-C socket of the
charging case: 5 V
7 hrs with rechargeable battery of the
earbud (test conditions: iPhone within
1 m distance, Bluetooth AAC codec,
volume level 50 %, no EQ settings);
20 hrs with rechargeable battery of
the charging case
approx. 1.5 hrs
operation: 0 to +40°C
storage: –25 to +70°C
operation: 10 to 80%, non condensing
storage: 10 to 90%
earbuds: 0.63 mT
charging case: 101 mT
earbuds: approx. 6 g each
charging case: approx. 37 g
Bluetooth 5.1 compatible, class 1, BLE
2,402 MHz to 2,480 MHz
GFSK, π/4 DQPSK, 8DPSK
HSP, HFP, AVRCP, A2DP
10 mW (max)
aptX®, AAC, SBC
CX 400BT True Wireless | 33
, 600 mA