Telescopic swing trainer with a compact, space-saving design that lets you practice anytime, anywhere, indoors or outdoors. - Extendable bar: the shaft can be lengthened for varied practice, and it emits a simulated impact sound during the swing to reinforce timing; when extended, it creates a realistic hit sensation. - Realistic swing feel: combines correct swing mechanics with the feel of a full stroke, helping improve contact distance and swing consistency. - Strength and warm-up tool: supports full-body warm-up and golf-specific strength work to build the muscles needed for a stable swing. - Portable and practical: ideal for practice at home, in the office, or on the go; suitable for small spaces and travel. - Use scenarios: 1) Pre-round warm-up at home, the driving range, or before a golf session. 2) Indoor practice in compact spaces such as apartments or hotel rooms. 3) Off-season or travel training to maintain rhythm and swing form when gym access is limited. Key attributes: - Function: telescopic extendable bar with impact-sound feedback - Size: compact, portable, extendable design - Performance: aims to improve swing distance, timing, and consistency - Application: warm-up and strength training for golf muscles to support a stable swing Note: materials and exact dimensions are not specified. This description reflects the stated features and intended use.