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Casti Trust Primo Touch Bluetooth Wireless Earphones - black Specifications General Height of main product (in mm) 21 mm Width of main product (in mm) 68 mm Depth of main product (in mm) 45 mm Total weight 40 g Weight of main unit 4 g Connectivity Connection type wireless Connector style straight Cable style round Bluetooth yes Wireless range 10 m Wireless protocols Bluetooth Bluetooth version 5.0 Cables included MicroUSB charge cable Connector type micro-USB Audio Sound reproduction Stereo Audio channels 2.0 Driver size 10 mm Driver units 2 Sensitivity 102 dB Sound pressure level 95 dB Microphone yes Detachable microphone no True Wireless Stereo (TWS) yes Bluetooth profiles A2DP, HFP, AVRCP, HSP Audio codecs SBC Frequency response 20 Hz - 20000 Hz Features NFC no Background noise reduction no Foldable no Software no Accessories charging case, micro-USB charge cable Noise reduction no Headphone Adjustable headband no Active Noise Cancelling no Total harmonic distortion 5 % Earcup type in-ear Ear-cap construction closed Swivel earcups no Rotating earcups no Output channels 2 Magnet type Neodymium Microphone Sensor type microphone electret Pick-up pattern Omnidirectional Frequency response microphone 150 Hz - 4000 Hz Echo cancellation yes Gaming Designed for gaming no Lighting Lights no Protection Waterproof no IP Code (International Protection Rating) no Power Recharge time 2 hours Playing time 4 hours Rechargeable battery yes Max battery life - stand-by 2160 hours Max battery life - phone calls 12 hours Max battery life - music 10 hours Battery type (AA, AAA, etc.) polymer Battery composition (Alkaline, Li-ion, etc.) Lithium-ion cell Input Power source battery, USB Compatibility Suitable for Listening to music, Handsfree calling, Daily use Compatible Device Types Bluetooth devices Control Controls on earcap yes Controls play controls Remote control on earcap LED indicator functions On case: 4x blue LED battery status. On earphones: Red, when charging, off when fully charged. Red/Blue LED flashing, pairing mode. Slow flash blue LED paired. LED indicators yes https://www.trust.com/en/product/23712-primo-touch-bluetooth-wireless- earphones-black