KOSS TWS250i Wireless Earphones

High quality and compact True Wireless headphones from Koss with integrated microphone and Smart Connect Case UI. Specifications: - Frequency response: 20 - 20,000 Hz - Driver: 6 mm - Bluetooth: 5.0 - Range: approx. 10 metres - IPX5 standard - Battery life: up to 4.5 hours - Charging time: 1.5 hours in the charging box - DC Input: 5 V, 280 mAh - Charging box with USB Type-C - Weight: Earphones approx. 10 gr. / Charging box approx. 44 gr. Energy Supply: - Energy Supply: Rechargeable Battery - Type of Battery / Rechargeable Battery: Lithium-Ion - Capacity (mAh): 280 - Max. Battery Life (h): 4,5 - Max. Charging Time (h): 1,5 - Required Number: 2 - Integrated Microphone: Yes - Incl. Charging Case: Yes Transmission Method - Transmission: Bluetooth - Max. Range (m): 10 Ports: - USB: 1x USB-C - USB Function: Only for battery charging Features: - Wearing Comfort: In Ear - Transducer Principal: Dynamic - Diameter Driver Unit (mm): 6 - Frequency Response (Hz): 20 - 20000 - IP Code: IPX5 Connectivity: - Bluetooth: 5.0 - Weight (g): 44 + 2x 10