The Stagg SPM-235 BK are in-ear headphones with an ergonomic design. They offer premium high definition sound isolation and excellent bass response. The headphones are perfect for stage performances. The extensive, included accessories complete the high-quality in-ear headphone set. Features: Stagg SPM-235 BK in-ear headphones/monitoring, first-class high-resolution sound isolation with excellent bass response, frequency range: 7 Hz - 40 kHz, sensitivity: 108 db SPL, impedance: 30 ohms, plug: 3.5 mm (1/8 inch), mini socket, cable length: 1.2 metres, weight: 2 m. 0 g- Accessories Includes: EVA foam case, 3 pairs of memory foam ear tips, 2 pairs of rubber ear tips