Wireless Earphones TWS with micr. BT-X49

Description: Mini TWS Bluetooth In-Ear Headphone BT-X49 Music transfer & handsfree function via Bluetooth V4.2 Pairing with Bluetooth-enabled audio devices, Smartphones, Tablets, etc. Built-in microphones in both In-Ear headphones Noise & echo reduction Wireless In-Ear design Function button on both In-Ear headphones (play/pause/on/off) Telephone calls, redial, answer call Soft and comfortable ear hooks Ideal for sport activities | Application: Music | Application: Internet | Application: Mobile | Design: In-ear | Design: Ear-clip | Technology: Hands-free | Wireless communication: Bluetooth | Connectors: microUSB | Sound: Stereo | Audio controls: Answer/Mute calls | Bluetooth features: HFP (Hands-Free Profile) | Bluetooth features: HSP | Bluetooth features: AVRCP (Remote control) | Bluetooth features: A2DP (Stereo transmission) | Impedance : 32 | Pass band (min): 20 | Pass band (max): 20000 | Sensitivity: 95 | Microphone: built-in | Range: 10 | Color: Black | Weight: 12 | Accessories included: 2 wireless earphones charging case MicroUSB charging cable 3 sets of earbuds | Other features: Bluetooth V4.2 / Profils: A2DP 1.3, AVRCP 1.6, EDR, HSP 1.2, HFP 1.6, TWS / ~10m distance Loudspeakers: frequency range 20Hz~20kHz Bluetooth: frequency band 2.4GHz Bluetooth: radiated transmission power max. 2.5mW SNR / THD / Impedance: 95dB / 0.1% / 32 Headphones: 2x 50mAh lithium polymer battery 3.7V Headphones: charging time ~2 hours Headphones: talking time ~3 hrs. / playing time ~3.5 hrs. Standby time ~20 hours (BT connection, no music) Charging case: 300mAh lithium polymer battery 3.7V Charging case: charging time ~2.5 hours (DC 5V/1A) Charged charging box charges the headphones ~3 times Operating temperature: 10°C up to +50°C